Gura is not in the US.

Disclaimer

I firmly believe that disclosing whether someone resides in the United States does not constitute doxxing, as this information is not specific enough to identify an individual. All data referenced in this context is gathered from publicly available streams and content. My intent is not to harass or infringe upon anyone's privacy.

Note

This page includes a substantial amount of data, some may seem redundant or less relevant. However, I believe it's important to present this information for completeness, and while something may not look immediately useful, it could provide contradictory elements that aren't immediately obvious.

Instead of reading the page from top to bottom, you can jump to the Timeline, which links to the most relevant pieces of data from the rest of the page, and work your way up.

I encourage you to conduct your own research and tests rather than rely solely on my word. I've done my research to the best of my ability, trying to present all information objectively, without cherrypicking or ignoring anything that contradicts my assumptions.

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Audio Analysis

Mains Hum Audio Analysis

What is mains hum?

Mains hum is low-frequency noise caused by electrical power sources, often picked up by audio equipment due to electromagnetic interference or poor grounding. The fundamental frequency varies based on regional power standards: it is 60hz in North America, parts of South America, and parts of Japan, while it is 50hz in most other regions. The harmonics of mains hum, which are multiples of the fundamental frequency, include 120 Hz/180hz/240hz for 60hz systems, and 100hz/150hz/200hz for 50hz systems. These harmonics are frequently present in recordings as well.
There can be multiple sources of hums in audio recordings, and not all are necessarily directly related to the power line, such as computers, monitors, LED lights, fans, phone chargers...

From https://en.wikipedia.org/wiki/Mains_hum

Mains hum, electric hum, cycle hum, or power line hum is a sound associated with alternating current which is twice the frequency of the mains electricity. The fundamental frequency of this sound is usually double that of the local power-line frequency: that is to say, 100 Hz in areas with 50 Hz power, and 120 Hz in areas with 60 Hz power. The sound often has heavy harmonic content above 50/60 Hz. Due to the presence of mains current in mains-powered audio equipment as well as ubiquitous AC electromagnetic fields from nearby appliances and wiring, 50/60 Hz electrical noise can get into audio systems, and is heard as mains hum from their speakers.

The hidden background noise that can catch criminals 5 min. youtube video

Mains Electricity By Country

https://en.wikipedia.org/wiki/Mains_electricity_by_country

More sources and explanations

Mains Hum

https://www.open.edu/openlearn/history-the-arts/recording-music-and-sound/content-section-6.2

Anything electrical that is plugged into the mains can be susceptible to hum. Mains electricity is an alternating current, whereas something like a battery provides direct current. In the UK the mains voltage is about 240 V, with a frequency of 50 Hz. Most of Europe has a voltage of 220 V at 50 Hz, while the USA has a voltage of 110 V and a frequency of 60 Hz.
The voltage doesn’t cause noise, but the fact that it is alternating and not direct current can cause problems. The 50 Hz frequency (in the UK and Europe) can interact with some components inside electrical devices such as transformers, and can cause a vibration which is audible as a hum. The fundamental frequency of this hum is usually 50 Hz, (or 60 Hz in the USA), but just like a musical instrument, this can have a number of additional harmonics.

ENF Power Signature

https://www.mast.umd.edu/research.php?t=enf

The Electric Network Frequency (ENF) is the frequency of power distribution networks in power grids; it is nominally 60Hz in North America and 50Hz in most other places. The ENF does not stay at this nominal value, but fluctuates around it due to changing loads in the power grid. What makes the ENF useful for forensic purposes is that it can be captured by audio or video recordings due to electromagnetic influences.

The hum that helps to fight crime

https://www.bbc.com/news/science-environment-20629671

"The power is sent out over the national grid to factories, shops and of course our homes. Normally this frequency, known as the mains frequency, is about 50Hz," explains Dr Alan Cooper, a senior digital forensic practitioner at the Met Police.
Any digital recording made anywhere near an electrical power source, be it plug socket, light or pylon, will pick up this noise and it will be embedded throughout the audio.

Exploring Power Signals for Location Forensics of Media Recordings

https://sigport.org/sites/default/files/docs/10Hertz_Paper.pdf

Electric network frequency is a newly developed emerging technology of today. This inherent feature of audio and video recordings is a foolproof method for forensic analysts to determine their authenticity and to retrieve the time and location of the original signal recording.
Although the variations maybe random there can be found a regularity to its fluctuations about the nominal value, which is 60Hz in North America and 50Hz in most other places.
The recorded ENF might contain harmonics as well, which might have a power higher than the fundamental frequency. So harmonics are to be considered in analysis of ENF; even though harmonics above 3rd harmonic might not be useful due to their contamination by lower frequency audio signals
The ENF components of electric grids are centered either at 50Hz or 60Hz and their first harmonics fall around 100Hz and 120Hz.

How can mains hum be used to determine location?

Mains hum can be analyzed by transforming an audio file into a visual representation, such as a spectrogram. A spectrogram displays audio signals in terms of frequency (y-axis) over time (x-axis). Identifying a consistent peak at either 50hz or 60hz on the spectrogram indicates the presence of a hum. Additionally, harmonics such as 100/150hz for a 50hz hum, or 120/180hz for a 60hz hum, can also be observed, reinforcing the identification of the fundamental frequency. Typically, a hum appears as a continuous peak rather than a brief transient sound, making it distinguishable in the spectrogram analysis.

Hiding the Hum: Why it's not always visible

• A professional audio setup significantly minimizes or masks mains hum to get clean voice audio free from external noises.
• Band-pass and Low-pass Filters cut off frequencies below a certain threshold that are normally inaudible to the human ear.
• A noise gate selectively allows only audio signals that exceed a specified volume threshold to pass through. This means that when someone is not speaking, the gate prevents any background noise, including hum, from being transmitted, resulting in minimal detectable sound.
• A compressor reduces gain when music or game audio is playing to prevent clipping. By lowering the overall volume, compresors diminish the relative visibility of an already quiet hum.
• Vtubers and professional streamers use audio interfaces or mixers that feature built-in real-time filters to get cleaner audio.
• BGM and game audio can mask hum.
  Due to these reasons it's rare to find visible traces of mains hum in professional audio recordings.

Tools used

I downloaded and examined spectrograms of various videos, focusing particularly on watchalongs, which lack BGM or game sounds, and VR streams as typically they use a different microphone setup that may not be subjected to the same filtering as the main setup.

I've also tested other vtubers with known locations to check if the main hums that were visible in their recordings were 50hz or 60hz, and all of them matched the expected result: Other Vtubers.

To download the audio of a youtube video I used yt-dlp (this will generally be around 60mb/hour): yt-dlp https://youtu.be/example -f bestaudio -o downloaded_audio
Then I used ffmpeg to convert the downloaded audio into an uncompressed WAV (resulting file will be around 600mb/hour): ffmpeg -i downloaded_audio -c:a pcm_s16le uncompressed_audio.wav
Finally, opening the WAV into a software to display its spectrogram. I used iZotope RX as it has useful functions to focus on specific amplitude and frequency ranges, but even something like Audacity should work in most cases.
No amplification/compression/filtering/audio or image altering of any kind was done for anything on this page.

NOTE: All images are scaled down on this page. Right click images and open in a new tab for the full size.

Gawr Gura Audio Analysis

Oct 16 2020 - Ghostbusters

Members-only movie watchalong. Watchalongs give the clearest data as they have no BGM or game audio.

Clear 60/120hz signals indicate a 60hz hum.
Signals: 60hz, 100hz, 120hz.

Feb 5 2021 - Blue Planet

This is a member-only documentary watchalong with no BGM after the first 10 minutes.
Full Spectrogram
Pretty much the same as above, except 120hz is less visible.
Signals: 60hz, 100hz, some 120hz.

Mar 30 2021 - Resident Evil 2

https://www.youtube.com/watch?v=JELLJ3osUUQ
Gaming stream. Starts at 7:59PM EST. First save at 26m45s. When she saves at 41m17s, the first save shows a time of 17:27, meaning her PC is set to a timezone 2 hours ahead of EST.
Other saves timestamps: 41m17s, 58ms23s, 1h17m26s, 1h30m28s.
She is messing with her PC and Switch (see DMC3 stream) timezones on purpose to throw people off. Amelia was doing the same thing on her PC and Switch around the same time.

Apr 1 2021 - The Last Airbender

Members-only movie watchalong.
Full Spectogram shows a noisy environment, with 60hz/120hz hums.
Zoom

She mentions watching the movie from Prime Video, but the movie was unavailable on Prime Video in the US at the time. However, it was available on Netflix, and when describing the interface she describes Netflix-only UI elements. Pic
https://warosu.org/vt/thread/2115827#p2117584 https://warosu.org/vt/thread/2115827#p2117526
I don't think this proves or disproves anything about her location at this time. She may have gotten confused or lied for whatever reason.

Apr 19 2021 - Super Metroid

https://youtu.be/htSesevc0fw?t=10255
Full Spectrogram has nothing obvious.
At certain timestamps such as 02h51m, when the game is quiet, she starts speaking and a 120hz signal get picked up, synced with her voice (noise gate): Zoom
Audio/Video Spectrogram Clip

May 10 2021 - Resident Evil 8

https://youtu.be/NZxgr2SIAVg?t=15128
Full Spectrogram of this noisy game stream.
Starts at 8:10PM EST and lasts over 5 hours. Starts a new game. When doing a manual save at 4h12m09s the existing save has a playtime of 3h10m, but the timestamp shows it was saved at 9:13PM, indicating the computer is set to a timezone 2 hours later than EST: Pic
The beginning of the stream is quiet: Zoom
Signals: 35hz, 65hz, 120hz.

May 17 2021 - We Were Here Too

Full Spectrogram: can't see much.
https://youtu.be/Y3KpgjJ5Ks8
Quieter after 2h19m: Zoom
Gaming stream. Collab with Mori, who is in Japan.
At 2h19m07s we see Gura's 250ms ping to a server in Asia: Pic

May 18 2021 - Resident Evil 8

https://youtu.be/XBmvbhiLADY?t=249
Full Spectrogram
Stream starts at 8:12PM EST and lasts over 5 hours again.
At 4 minutes she loads the most recent autosave with the timestamp "05/10/2021 22:31:05" and her last manual save has the timestamp "05/10/2021 22:20:55". Both saves show 4+ hours of playtime and the previous stream started after 8PM EST: Pic
The beginning of the stream has low BGM, and some signals are visible: Zoom (the strange waves are part of the game music)

Jun 16 2021 - Sharknado

This is a member-only movie watchalong with no BGM or other noises except during the intro and outro.

Same noisy environment and constant 60hz/120hz hum as the previous watchalongs.
Signals: 60hz, 120hz.

Jun 20 2021 - Jaws

A public movie watchalong on the day of her birthday.
Full Spectrogram, same constant 60/120hz hum.

Jul 20 2021 - One Hand Clapping

https://youtu.be/4pmBp7C3C1E?t=10192
Gaming stream. Noisy and she turns on an echo effect on her voice for almost the entirety of the stream.
She turns off the game and echo effect after 2h49m35s until 2h50m40s but there are no hums: Zoom

Jul 21 2021 - Jump King

https://youtu.be/vci-RuRSios?t=202
Full Spectrogram
Even during the quieter parts of the stream there's a lot of noise and no clear 50hz or 60hz hums: Zoom
At the start of the stream she talks about how the settings on her GoXLR audio mixer have reset.

Jul 31 2021 - Chatting

Members-only chatting stream with ocean waves and an echo effect on her voice.
Full Spectrogram
Spikes in the 50hz, 100hz and 150hz frequencies happen throughout the stream when she's speaking: Zoom

Aug 18 2021 - Karaoke

Unarchived karaoke stream.
Full Spectrogram
Even zooming into the parts with no music there's no 50 or 60hz hum visible: Zoom

Aug 28 2021 - Devil May Cry 3

https://youtu.be/J2-scR5INo8?t=6140
Gaming stream, starts at 8:06PM EST.
After 1h42m there is a silent section with clearly visible 60hz, 120hz, weak 180hz and 240hz signals: Zoom 1
Again after 1h55m15s: Zoom 2
At 1h42m20s her Switch menu shows a 8:50PM time, when it should say 9:50PM: Pic

Sep 7 2021 - Chatting Stream

Members-only chatting stream with BGM.
Full Spectrogram
From the moment she speaks a 50hz hum appears synced with her voice. However there's constant BGM playing and some of the other 100/150/200hz frequencies may be part of it.
Zoom 1 - Zoom 2 - Zoom 3
At different points of the recording (2m-8m, 15m40s-23m50s, 33m40s-39m30s, 55m30s-1h01m20s, 1h27m00s-1h36m40s) there are spikes of the 50hz, 100hz and 200hz frequencies, resulting in a hum that lasts for a few minutes before turning off. See the Dec 23 stream for my explanation of this hum.

Sep 16 - Oct 12 2021 - Asobi Asobase

3 streams of a members-only anime watchalong.
Sep 16: Full Spectrogram - Zoom
Sep 27: Full Spectrogram - Zoom
No hums to see in the first 2 streams.

Oct 12:

A change in her streaming environment.
50/100/150/200hz hums consistent with a 50hz mains hum start being a constant, instead of the 60/120hz observed in previous streams.
Particularly this stream shows 50/100/200hz spikes that will come back often in streams, and I attempt to give an explanation for what they are in the Dec 23 stream.

Oct 14 2021 - Minecraft

https://youtu.be/s0Tae_MdgPQ
Spectrogram: noisy stream, BGM and game sounds.
However after zooming in we see more 50/100/200hz signals synced with her voice:

Audio/Video Spectrogram Clip
Signals: 50hz, 100hz, 200hz.

Nov 12 2021 - VR Skyrim

https://youtu.be/Jm5prJAYamA?t=3855
Full Spectrogram
Weak 50hz/100hz throughout the recording.
Dring a quiet moment after 1h04m30s, a strong 50/100/200hz signal becomes clear:

Signals: 50hz, 100hz, some 150hz, 200hz.

Dec 23 2021 - Wrapping Gifts

Members-only chatting stream with BGM, split in two parts:
Part 1 Spectrogram
Part 2 Spectrogram:

This stream shows an interesting pattern: cyclical spikes at 50hz and its harmonics occur approximatey every 13 to 15 minutes intervals, each lasting around 10 minutes.
This behavior is consistent with the operation of an electronic device, such as a refrigerator compressor, air conditioner, or electric heater controlled by a thermostat.
When the device activates, it draws a significant from the AC line, which increases electromagnetic interference and ground noise. This leads to stronger 50hz harmonics in the recording. This hypothetical heater would be turning off when the temperature reaches the set point and turns on again when it drops below this threshold.
In later streams, we observe the same device operating during warmer months, suggesting it might be a general HVAC unit that provides both cooling and heating functions.

In the stream she says she won't be able to spend Christmas with her family this year and will have to send them their wrapped gifts.
Later she tweets that her family "surprised her for Christmas" and she cancels her scheduled streams to spend time with them:
Schedule: https://x.com/gawrgura/status/1473759008221798402
Streams are canceled: https://x.com/gawrgura/status/1474480954467045380
One day later she cancels more streams because she's sick: https://x.com/gawrgura/status/1475205922985111553

Jan 20 2022 - Apotheon

https://youtu.be/1Gv5O0Q1DDc?t=470
Full Spectrogram
After 7:55 the 100hz/200hz signals match her voice: Zoom
After 10:05 for a short moment only her voice can be heard, and the 100hz/200hz signals are visible: Zoom - Audio/Video Spectrogram Clip

Jan 22 2022 - Superhot

https://youtu.be/8D1HlqdAeJg?t=2748
Full Spectrogram
After 45:50 there is little sound coming off the game, and there are 50hz/100hz signal spots matching her speech: Zoom{85%:85%}
The same happens after 1:37:20: Zoom - Audio/Video Spectrogram Clip

Feb 9 2022 - Nintendo Direct

Members-only watchalong.

Constant 50/100/200hz signals throughout.
Zoom

Feb 16 2022 - VR Minecraft

https://youtu.be/xgBXRUsqjsc?t=2175
Full Spectrogram
At certain points of the recording such as 36m30s-37m30s and 49m20s-55m10s, the 50/100/200hz signals show up, possibly the same suspected HVAC (see the Dec 23 2021 stream).

Apr 23 2022 - Saturday Morning Cartoons

A members-only cartoons watchalong.

Zoom
Visible hums at 50/150/250hz, weak at 100hz and 200hz.
Signals: 50hz, weak 100hz, 150hz, weak 200hz, 250hz.

Jul 5 2022 - Tadaima

https://youtu.be/k_skfzMMyso
Chatting stream after coming back from her first offline collab. Constant BGM throughout.
Full Spectrogram
There's a constant 180hz signal throughout the clip synced to her voice (noise gate). It becomes more apparent after she says she lowered her mic threshold after 7m20s: Audio/Video Spectrogram Clip (look at 180hz)
Signals: 180hz.

Jul 21 2022 - Welcome Home Master RP

This members stream shows traces of a 60hz hum during quiet moments.
Full Spectrogram
Zoom 1 - Zoom 2
Signals: 60hz.

Jul 27 2022 - Rust

https://youtu.be/H9Ycp5JRR88?t=662
Game stream with no BGM and many quiet moments.
Full Spectrogram
Zoom
Signals: 60hz, 120hz, 180hz.

Jul 31 2022 - Minecraft

https://youtu.be/pPHmidTM_sE?t=730
Minecraft collab. BGM and game sounds. After 12:10 during a quiet moment, a weak 60hz hum synced to her voice can be spotted: Zoom

Aug 6 2022 - Chatting

Members-only chatting stream with BGM. Noisy, hard to find much. A few times a weak 60hz signal appears synced with her voice: Zoom

Aug 8 2022 - Karaoke

Members only Ukulele karaoke.
Full Spectrogram
50hz mains hum from the suspected HVAC (see Dec 23 2021) is visible between 1h19m-1h45m: Zoom

Aug 31 2022 - hewwo

Another members-only chatting stream with BGM.

50hz mains hum from the suspected HVAC (see Dec 23 2021) is visible at 0h05m-0h13m, 0h43m-0h58m, and 1h40m-1h46m.

Oct 20 2022 - Resident Evil Showcase Reaction

https://youtu.be/pKa8iAs0gb0?t=3792
Full Spectrogram
A watchalong of another stream, noisy. Only BGM after 1h04m30s.
After 1:03:20 the showcase ends and the 50hz mains hum can be spotted: Zoom
Signals: 50hz, 100hz, 150hz.

Dec 15 2022 - Dec 16 Advent

https://youtu.be/VA094o05HUs
Short 1 minute upload showing strong 50hz mains hum.

Signals: 50hz, 100hz, weak 150hz, 200hz.

Mar 25 2023 - Spring Shark Chat

Members-only chatting stream with BGM. She is back from Japan.
Full Spectrogram
Zoom 1 - Zoom 2
Signals: 25hz, 43hz, 60hz, 120hz, very weak 150hz, weak 170hz.

Apr 5 2023 - Fresh Catch

Members-only chatting stream with a light BGM. Can't see anything worth noting.
Spectrogram

Apr 22 2023 - Scooby Doo Watchalong

Members-only movie watchalong.

Signals: 35hz, 45hz, 60hz, 115hz, 120hz, 150hz.

May 4 2023 - Star Wars Watchalong.

Members-only movie watchalong.
Full Spectrogram
Signals: 40hz, 60hz, 115z, 120hz, 150hz, 170hz, 180hz.

Aug 15 2023 - Outer Wilds

https://youtu.be/YDE376Lqjn8?t=18586
Long and noisy gaming stream.
At 5:07:00 we can see a 60/120/180hz signal, though it's not synced to her speech, it could be part of the game: Zoom 1
After 5:09:50 she quits the game and speaks without BGM for a short while: Zoom 2
Signals: 66hz, 90hz.

Nov 23 2023 - Sendai

https://youtu.be/Eg1I7rOfU2A
Chatting stream with BGM.
50/150hz signals synced with her voice.
Full Spectrogram
Zoom
Signals: 50hz, 150hz.

Feb 9 2024 - Member News

Members-only chatting stream with BGM.

Signals: strong 50hz, strong 100hz, weak 130hz, weak 150hz, strong 195hz.

Feb 14 2024 - ASMR

Members-only ASMR Valentine special with no BGM.

Signals: 33hz, 42hz, 60hz, 80hz, spotty 120hz, 130hz, 160hz, 190hz.
This may have been pre-recorded on a different setup.

Apr 19 2024 - Monster Hunter Rise

At multiple times during quieter parts of the stream, such as 44m25s-44m50s and 45m30s-45m50s, a 50hz/100hz hum is visible in sync with her voice: Zoom - Audio/Video Spectrogram Clip

Apr 23 2024 - Think Fast Chucklentus

Members-only chatting stream. Louder than usual BGM..
Full Spectrogram
The same 50/100/weak 150/200hz hum as the suspected HVAC unit from the Dec 23 stream appears at intervals.
Zoom 1 - Zoom 2

May 26 2024 - Subnautica

Game stream. Noisy with ambient sounds. Last stream was over a month before.
Quiet moment with no BGM between: 2m25s-4m20s Zoom
Signals: 45hz, 50hz, 90hz, weak 130hz that distorts around 3m20s.

Jun 1 2024 - New Stuff

Chatting stream with BGM.
Zoom
Signals: 50hz, 85hz, 130hz.

Jun 2 2024 - Dark Souls Remastered

Gaming stream. Quieter at the start.
Zoom
Signals: 50hz, 90hz, 130hz.

Jun 6 2024 - Karaoke

Members-only karaoke.
Full Spectrogram
Zoom
Signals: 45hz, 50hz, 90hz, weak 120hz, 130hz.

Jun 10 2024 - Mario Party

https://youtu.be/jhdi8QEtvdY?t=6438
Collab with Ame. Noisy recording.
After 1:47:20 the game goes silent and a hum can be seen when Gura speaks.
When Ame's mic is making noise in 3 points, the whole spectrum gets brighter, but when Gura speaks the 50/100/150/200hz signals are stronger.
Zoom
Audio/Video Spectrogram Clip
Signals: 50hz, 100hz, 130hz, 150hz, 195hz.

Jul 14 2024 - TAKE 2

Members-only chatting stream with BGM. BGM is louder during the first third.
Full Spectrogram
Between 1h57m-2h09m when the BGM is quieter the 50/100/200hz signals get noticeably stronger:

These signals are synced with her voice. This could be the same streaming setup as 9 Feb 2022 and 31 Aug 2022.
Audio/Video Spectrogram Clip
Signals: 50hz, 90hz, 100hz, weak 130hz, 200hz.
In this stream she says she is going to visit her family and will be back in August. Her next stream is over a month later on Aug 16.

Aug 27 2024 - FNAF Into the pit

https://youtu.be/Fmf0vIp8jNw?t=3305
50hz & 90hz & 125hz bands
Another noisy recording. After 55:10 there is a quiet moment.
Zoom
Signals: 50hz, 90hz.

Dec 7 2024 - Little Fish

Members-only chatting stream with BGM.
Full Spectrogram
Noisy recording. 50hz signal throughout the recording synced with her voice. A 100hz signal also shows occasionally, for example between 16m20s-20m20s.
Zoom 1 - Zoom 1
Signals: 50hz, 100hz.

Jan 12 2025 - Chatting stream

Another members-only chatting stream with some BGM.
Full Spectrogram
After 1h37m a 50/100/200hz signal is visible, synced with her voice.
Zoom
Signals: 50hz, 100hz, 200hz.

Jan 19 2025 - Big Brain Academy

https://youtu.be/ChCNTVq739I
Gaming stream. Strong 50hz throughout, some 100hz and 200hz.
Full Spectrogram
Zoom
Signals: 50hz, 100hz, weak 195hz.

Apr 5 2025 - Logging In

Members-only chatting stream with BGM.
Full Spectrogram
After 48:30 we can see a 100hz line synced to her voice:

Audio/Video Spectrogram Clip
Signals: oscillating 45hz, weak 50hz, 100hz, weak 200hz.

Apr 16 2025 - important announcement

https://www.youtube.com/watch?v=7WFg2wq10rw
Talking stream with no BGM.

Zoom
Signals: strong 50hz, 90hz, 130hz, 155hz.

Apr 20 2025 - chat + announcing my final project

https://youtu.be/3pS6f3_veik
Chatting stream with BGM.
Full Spectrogram
Stronger 100hz/195hz signals between 13m-19m and 42m-45m:

Audio/Video Spectrogram Clip
Signals: 100hz, 130hz, 155hz, 195hz.

Sameko Saba Audio Analysis

Jul 1 2025 - 1 Million Subscribers

https://youtu.be/7Dj2_NQB7Jw
Chatting stream with constant BGM. Can't find anything interesting.
Full Spectrogram

Jul 3 2025 - Resident Evil 4

https://youtu.be/VwYAZbXSxmY
Noisy gaming stream. The first 25 minutes are the main menu music.
Full Spectrogram
After 3h10m10s we have spots of a 50/100hz signal synced with her speech (noise gate):
Zoom
Audio/Video Spectrogram Clip
Signals: 50hz, 100hz.

Aug 3 2025 - Cereal Tier List

Members-only chatting stream with BGM.
Full Spectrogram
Between 24:00-37:00 a 50hz 100hz signal appears and disappears: Zoom
Signals: 50hz, 100hz.

Oct 30 2025 - Halloween Scary VR Games

Halloween VR stream. Has BGM and game sounds. She is using a different headset than in any previous Saba stream.

At 14:40 the BGM is looping and for a couple seconds we only get her clear voice. After 15:50 she shuts off the BGM and is about to start the game yet.

At both timestamps her mic is open and a 50hz hum comes through: Closer Zoom
Audio/Video Spectrogram Clip
Signals: strong 50hz, weak 130hz, 160hz

Other Vtubers - Establishing accuracy

I validated the above data by benchmarking it against recordings of vtubers with publicly known locations.
The frequencies for all the recordings matched the expected regional power standards in 100% of the cases where a 50hz or 60hz hum could be seen, establishing and validating the technique's accuracy.

Dec 5 2020 - Amelia (NA)

https://www.youtube.com/watch?v=cOgynhXPKKw

ASMR stream. Clear 60/120hz.

Apr 7 2022 - Kronii (NA)

https://youtu.be/J4ML65juR8o

Movie watchalong. 60/120hz can be seen in the left part of the image. BGM starts after 1:28:15. Still, after zooming in, 60hz and 120hz constant hums become clear again.
Zoom

Jun 25 2022 - Kiara (NA)

https://www.youtube.com/watch?v=gkOPn0P21F8

Kiara is in the USA for this chatting stream. She has BGM on. 60/120hz hums are immediately visible on the spectrum.

Oct 31 2022 - Fauna (NA)

https://youtu.be/oT5WJfMM9cc

Watchalong. Weak 60hz and clear 120hz.

Sep 2 2023 - Ame (NA)

https://www.youtube.com/watch?v=1xdWcr--hZo

Movie watchalong. Only a 120hz hum is constant throughout.

Oct 9 2023 - Kiara (EU)

https://youtu.be/KUouL2LPRDE?t=4280

Kiara is in the EU (1:11:20). 50/100/150/200hz bands can be observed across the recording particularly on the right side of the image.

Nov 1 2025 - CC (EU)

https://youtu.be/oyYgeVvHO2Y

Movie watchalong. Not the cleanest spectrum but we can make out constant signals along the 50/100/150/200hz frequencies particularly on the right side of the image.

Ping & System Specs

Introduction

Ping is used to measure latency, that is the round-trip time (RTT) for how long it takes one packet to go from your computer to another and back. Latency depends on various factors, including routing path and how many hops they go.

Latency can be made worse by network conditions, but never better than what distance allows.
High ping is NOT proof of high distance, as it's possible to take a bad route, be using a VPN, having a bad connection generally, etc.
Low ping, however, IS proof of low distance, or at least rules out long distance.
It is possible for someone in Los Angeles connecting to a server in San Francisco to have a 200ms ping.
It is NOT possible for someone in Berlin to connect to a server in San Francisco and have a 80ms ping.
So while having a high ping is not proof the other end is far away, having low ping is effectively proof of short distance.

Oct 29 2020 - Among Us (ping)

https://youtu.be/372fjz1T80I?t=896
In this stream she plays with viewers from US, EU and Asia, hopping on different servers throughout. The game shows the ping on the upper portion of the screen.
On US servers (0h16m) her ping is 50ms. On EU servers (1h15m) her ping jumps between 115-150ms. On Asia servers (1h58m) her ping is 250ms.

Oct 30 2020 - Left 4 Dead 2 (ping)

https://youtu.be/SYwwiO52ndY?t=9073
Her ping is 75ms where Amelia's is 28ms. Amelia is WC (https://youtu.be/Uo3fi0c18YM?t=1406).

Jun 25 2021 - Dead By Daylight (players)

https://youtu.be/AyBH0OS-eps
From looking up names of players in her games, everyone who can still be found is from North America.
RafeLopez347 (1h28m): https://steamcommunity.com/profiles/76561199651449596 (https://archive.is/3IJgH)
VickiiC (1h28m): no location, but all friends are US. https://steamcommunity.com/profiles/76561199261823668 (https://archive.is/WwsYw)
Sweetkitten13 (2h06m): past usernames. https://steamcommunity.com/profiles/76561198404626802 (https://archive.is/lGO2N)

Jun 27 2021 - Minecraft (ping)

https://youtu.be/1pHcNzHJ_BE?t=9200
Gura's 2/5 bars on a JP minecraft server with 29 people online is 2 bars (everyone is between 2 and 3 bars)

Jul 8 2021 - Dead by Daylight (players)

https://youtu.be/mh5yIIF3yGw?t=5157
TTV_Drizmatic (1h25m): Country set to US https://www.youtube.com/@drizmatic7785

Aug 28 2021 - Dead by Daylight (hiding players)

https://youtu.be/19Zze0UrLQ4?t=1001
She uses black bars to cover the names of the players in her games.

Oct 8 2021 - Minecraft (high ping)

https://youtu.be/ZSrU5DnCnLs?t=9309
Gura's 1 bar connection to the Minecraft server (hosted in Japan).
Ame and Kronii are WC and have 5 and 4 bars.

Oct 20 2021 - Dead By Daylight (players)

https://youtu.be/H2v10hviV6o
No black bars. Every single random player from her streamed games that I was able to still find is EU based.
David Paletta (1h13m): https://steamcommunity.com/profiles/76561198275157143 (https://archive.is/5s532)
Ernst Haft (1h40m): Many results, almost everyone with a flag is EU: https://steamcommunity.com/search/users/#text=ernst+haft (https://archive.is/lvNhr)
AndryGate (1h53m): Italian player active on the DBD Steam discussions. https://steamcommunity.com/id/AndryGate/posthistory/ https://steamcommunity.com/app/381210/discussions/5/3168820451537354771/ (https://archive.is/dUq8e)
ttv.Adeptnox (2h07m): Swedish player and content creator https://x.com/AdeptNoxTV https://www.twitch.tv/adeptnox https://www.youtube.com/@AdeptNox
luxmense (2h28m): Turkish player https://steamcommunity.com/id/LUXMENSE (https://archive.is/SrKLE)
Fronzykun (2h28m): French player https://steamcommunity.com/id/fronzykun (https://archive.is/vWpon)
Kronii (NA) joins after this and is likely to mess up the logic for region matchmaking.

Oct 24 2021 - Among Us (hiding ping)

Gura hiding ping with overlay: https://youtu.be/al8l8J2qDRA?t=229

Kiara ping: https://youtu.be/qazuzvxL0e4?t=214
Irys ping: https://youtu.be/OMy4QY1VbiI?t=276
Kronii ping: https://youtu.be/y1z9ib6QBgI?t=208
Fauna ping: https://youtu.be/HuXDcwUflJU?t=476
Images: Kiara Irys Kronii Fauna
A few others who were in the event also used the overlay to hide their pings this stream.

She did not have a problem showing ping before: https://youtu.be/372fjz1T80I?t=896 (50ms US, 160ms EU, 250ms Asia) and https://youtu.be/ydkLps8LXzo?t=287

Feb 4 2022 - Super Drink Bros (high ping)

250 ping to Mori in Japan: https://youtu.be/EHGTyH6aUr0?t=345

Proof Mori was in Japan: https://youtu.be/0WshLMuaCBI?t=9407
Expected ping times to Japan are: WC USA 80-130, EC USA 100-160, Central Europe 150-220
note she previously had a 250ms ping when connecting to a server in Asia, while believed to be in the US

Feb 5 2022 - Apex Legends (hiding ping)

https://youtu.be/1hSMpYUctlk?t=271
In this Apex Legends stream she positioned her overlay in the dead center of the screen, where the ping to the server is sometimes shown (see the Oct 30 2020 Amelia clip).
This is one of a handful of regular gaming streams where her overlay is not sitting in the usual bottom left corner.

Apr 19 2022 - Overwatch 2 (lag)

https://youtu.be/00B097-mwOA?t=1082
Overwatch 2 stream. Ping is not shown on screen.
They are playing on a Japanese server and her game is noticeably laggy. At 18:02 Gura hits an enemy with the hammer and about 300ms pass between the hit spark on the enemy and her game receives feedback and her ultimate is charged.
After 2:04:00 they change game regions to America and it does not get much better for her. At 2:43:10 she attacks again and there is a comparable delay between her hit spark and the ultimate getting charged.

Jul 14 2022 - Minecraft (F3)

She has no problem showing the F3 screen: https://youtu.be/JeJI-jUFcaI?t=1682

Jul 31 2022 - Minecraft (F3)

https://youtu.be/pPHmidTM_sE?t=8764
She hides her screen to F3 in Minecraft again. F3 does not show ping, but it shows PC specs.

Sep 25 2022 - Among Us (hiding ping)

https://youtu.be/-TPkX7tLj3Q?t=527
Hiding ping in AmongUs again.

26 Mar 2023 - Minecraft (F3)

Showing F3 in Minecraft: https://youtu.be/0wArI3n7Qu4?t=531
She is on a different computer than Jul 14 2022.

Sep 14 2023 - Prop Hunt (high ping)

https://youtu.be/r997HKNOB9E?t=1818
Pic
She has the highest ping at 225ms. Amelia (from WC) has the lowest at 64. A quick search with the server's name shows it was likely hosted in California.

Feb 10 2024 - Deep Rock Galactic (high ping)

https://youtu.be/NuNkFhobZp8?t=205
190+ ms with Amelia (WC)

Sep 4 2024 - Minecraft (high ping)

https://youtu.be/72SJQRQ7qi0?t=13483
She has only 1 bar to the server hosted in Japan, while everyone else has 4 or 5.
From my research, 5 bars in Minecraft translates to <100ms, 4 bars to 100-300ms, and 1 bar is over 1000ms, which makes the high ping an anomaly high regardless of location.

Apr 13 2025 - REPO (ping)

https://youtu.be/qgYK9k2KF7Q?t=10216
REPO collab with Kronii (host, NA, 88ms), Raora (Japan, 170ms), Kiara (EU, 154ms): Pic
A NA server fits with everyone's pings.
Kronii's ping of 88ms is high enough to indicate the server is not very close to her location.
Gura's 120ms ping is low, but not low enough to rule out she's connecting from outside North America.

Note: during this and some other REPO streams the ping glitches between showing the same number for everyone.
Source for Raora being in Japan: https://youtu.be/CV7ivk3Lf30?t=2015
Source for Kiara being in EU: https://youtu.be/9XCphnpE2U0?t=10509

Oct 30 2025 - REPO (ping)

https://youtu.be/nSXFLVV2914?t=599
During the REPO collab with Dooby and Lime, saba's ping was higher than Lime. Dooby is WC based and Lime is UK-based.
Pic
Lime is hosting the game, as the 'kick' and 'start game' options only show from her pov: https://youtu.be/ihJEHRM3B2c?t=1852
Supposedly, Lime couldn't directly host the game and they were assigned given a relay server. Based on Dooby's 80ms ping the server is most likely in North America.
Lime talking about VPN this stream: https://youtu.be/ihJEHRM3B2c?t=11521 - her VPN is only for the browsers, not for gaming: https://youtu.be/HDCCx8GRzM8?t=5560
Lime's ping to Marvel Rivals servers around the world: Pic (https://youtu.be/gZJQfBuR1rY?t=285)

Other stuff

Dec 28 2021 - Airport story

https://youtu.be/UbWBCjw5zJA?t=14791
She tells an airport story where she's by herself.

May 19 2022 - Airport story

https://youtu.be/qKjKUSZHrcA?t=10515
Another airport story.

June 15 2022 - WWE Strawpoll

https://youtu.be/mNq4d4vpe0I?t=904
After around 15 minutes into her WWEK22 stream, she posted a strawpoll in the chat: https://strawpoll.com/polls/7rnzG7926gO/results
In the past strawpoll used to display the country of the user who created the poll: https://archive.is/bv7Ak
The strawpoll showed it was created by an user from an European country.

Jun 20-30 2022 - Birthday off-collabs

Her birthday stream on the 20th turns into an offline karaoke with Ame: https://youtu.be/u7EWIbzTKAY
In the following days she has various off-collab streams with the other members of Myth: https://youtu.be/pRaOtpqvEx8 https://youtu.be/THl36CUv2lo https://youtu.be/3wsiJVzv9vg

Aug 8 2023 - Driving

https://youtu.be/9bvn2i-wGAo?t=238
At 3m58s she says she was late for streaming as she was stuck in traffic. At 2h53m03s she gets a question about driving and she says her mom was driving for her. Based on my timeline reconstruction, she was indeed in the US at the time of the story.

Jan 2 2024 - Kiara Plans

I haven't been able to confirm if this is true, or what Kiara says in her members stream.
In a members only stream Kiara talks about her intentions to go on a trip around Europe and mentioning Scandinavia, in company of "a mystery member who is not in Advent or Mori". She says she would not be streaming or tweeting during this trip, even though she does that with all her other vacations with other members.

Jun 4 2024 - Possible slip-up

https://youtu.be/nUYz6DF_ick?t=7322
This stream started at 8PM EST. At 2h02m she says "I've been training all... afternoon with miku". She possibly caught herself saying "day" or "night" and overcorrected to "afteronon" as it was 10PM EST.

Jun 29 2025 - Possible time slip-up

https://youtu.be/H_Nc-zjRmK4?t=7247
Her second stream as Saba started at 5PM EST. At 2h00m48s she ends the stream with "have an nice... day, no... night? have a nice evening?". She then appears to be looking at the bottom right corner of a monitor, where the Windows calendar usually is, and says "Have a nice start to your week", when it was 7PM EST but 1AM in Europe.

Local PC time

From someone else's post:

I'm not the Hz rentry guy, but I thought I'd provide proof that the private window trick is worthless, at least for Saba.

The other day, one of you said that she's in the US because her stream said GMT -4 using the "opening the pre-stream frame in a private window" trick.
In response, someone else said they changed their PC time and tested it, and it showed the fake timezone on their upcoming stream, implying that Saba might be doing the same.
Someone then said that he should provide proof that Saba knows how to change her PC time.
In late 2021 and even a year later in 2022, Gura began to change the time on her PC to PST, even though she continued to talk about being on the East Coast.

This lines up with the time when she supposedly moved out of the country. If it's true, then it's likely that after she moved, she saw her PC was using her local time and decided to change it so that it would look like "US time", but she chose the wrong time zone because she's a bit of a dumdum.
During Resident Evil 7 and Resident Evil 8 DLC streams, her time was behind by exactly 3 hours from EST time. Note that you can't see her current system time during any particular save, but you can see the time of the previous save when overwriting it on subsequent saves.

October 18th, 2021
RESIDENT EVIL 7: BIOHAZARD shark play game
https://youtu.be/sQyDvzyXJVE
0:00:00 stream start: 10/18/2021 20:04:39 EST

https://youtu.be/sQyDvzyXJVE?t=2365
0:39:31 her first save: 10/18/2021 20:44:10 EST

https://youtu.be/sQyDvzyXJVE?t=4080
1:08:05 her second save: 10/18/2021 21:12:44 EST
Notice that while she was saving it here, it says her first save was made at 10/18/2021 17:44:10 instead of 20:44:10.

November 2nd, 2022
【RESIDENT EVIL VILLAGE: SHADOWS OF ROSE】mold...home
https://youtu.be/OKFm4d20NJU
0:00:00 stream start: 11/02/2022 20:04:16 EST

https://youtu.be/OKFm4d20NJU?t=2075
0:34:40 her first save: 11/02/2022 20:38:56 EST

https://youtu.be/OKFm4d20NJU?t=2414
0:40:17 her second save: 11/02/2022 20:44:33 EST
Notice that while she was saving it here, it says her first save was made at 11/02/2022 17:38:56 instead of 20:38:56.

So this is definitive proof that not only does she know how to change her PC's time, she started doing it for some indiscernible reason in the second half of 2021 and continued doing it throughout all of 2022. This means that the private window trick is unreliable at best, as she has demonstrated that she has deliberately set the wrong time zone for her PC in the past.

---

Timeline

Considering all the data analyzed, this is, to the best of my ability, a comprehensive timeline of her movements between the US and elsewhere:

Before Sep/Oct 2021: US

• No reason to believe otherwise. Her recordings and watchalongs have clear 60hz hums as far as the Aug 28 2021 DMC3 stream.
• Streams around August and September have heavy audio filtering making analysis harder, possibly caused by her GoXLR resetting.
• The Jul 31 stream has some 50hz hum, but it's not the same 50/100/weak 150/200 that constantly shows up in later streams.
• There's some 60hz hum in the Aug 28 stream.
• I don't know how to explain the above anomalies, unless she was traveling back and forth during a time of travel restrictions between many countries at the time.

Sep/Oct 2021 to Jun 2022: not US

• Her streaming environment changes sometime in September or October, or possibly even August, when a 50hz hum starts to become visible.
• First visible in the Sep 7 stream and the Oct 12 watchalong.
• Other streams with 50hz hum: Dec 23, Feb 9, Apr 23.
• Streamed at an unusual time 2:32AM EST on Sep 27 2021: https://youtu.be/bLh4qogv8ag
• In the Oct 20 Dead by Daylight stream, all of her games matched her with players from Europe. In the Jun 25 DBD stream she was matched with American players.
• She started hiding her ping in games and PC specs.
• The Jun 15 Strawpoll incident exposed her for posting from an IP outside of the US. People believed she may have used a VPN or asked others to make the poll for her.

Jun 2022 to Aug 2022: US

• On Jun 20 she streamed from Amelia's setup in the US and spent the following 10 days doing offcollab streams with other members of Myth.
• The Jul 27 Rust stream shows a 60hz hum.

Aug 2022 to Jan 2023: not US

• The Aug 8 karaoke is back to showing a 50hz mains hum, with the same spikes of the suspected HVAC unit from the Dec 23 stream.
• The same happens during the Aug 31 stream.
• Other recordings with 50hz hum: Oct 20, Dec 15.

Jan 2023 to Mar 2023: Japan

• She was in Japan from Jan 25 to sometime in March where she recorded her 3D showcase.

Mar 2023 to Sep 2023: US

• Her first stream back from Japan is Mar 25 which looks different from the last setup before the Japan trip.
• She does some watchalongs where a 60hz hum is visible: Apr 22, May 4

Sep 2023 to Feb 2024: not US

• At this point information becomes less precise as her streams get less frequent, and harder to analyze, with no watchalongs.
• The 50hz hum is visible again in the Nov 23 and Feb 9 streams.
• Interestingly the Feb 14 Valentine's special ASMR looks like it was pre-recorded on a different setup.

Mar 2024 to Apr 2024: Japan

• She went to Japan to record for her 3D birthday live. She left Japan mid-April.

Apr 2024 - May 2025: not US

• Again, she did not stream much at this time, limiting the number of streams available to analyze.
• In her streams back from Japan we see 50hz mains hum in the Apr 19 and Apr 23 streams, the latter showing the suspected HVAC unit spikes.
• After May, 50hz, 85hz, and 130hz hums are consistently showing up in her streams.
• A lone 50hz signal is not enough to decisively say the source is the power grid, but these can be used as a signature to tell when she's streaming from the same setup.
• The Jul 14 stream continues to have the 50/90/130hz signals, as well as 50/100/150/200hz spikes of the HVAC unit activating (see Dec 23), possibly being turned on as the months get warmer.
• After the Dec 7 stream, but possibly earlier as the lack of streams makes it hard to tell, the 50/90/130hz signals are seemingly gone.
• Clear 50hz hum in the Dec 7, Jan 12, Jan 19, Apr 5, Apr 16, Apr 20 streams.
• Gawr Gura graduates May 1, 2025.

After June 2025: not US

• Sameko Saba debuts June 28, 2025.
• No watchalongs.
• Haven't gone digging too deep, but there are signs of a 50hz hum in the Jul 3 streams.
• The Aug 3 stream shows what is likely the HVAC unit (see Dec 23) turning on: it's weaker at 150hz and lasts 13 minutes.
• In the Oct 30 stream the 50/90/130hz signals can be seen again, suggesting she's in the same setup as last year's.

Conclusion

• The audio analysis of numerous recordings indicates her movements outside the US based on the presence or lack of 50hz/60hz hums.
• Analysis of recordings from other Vtubers confirmed 100% accuracy in distinguishing recordings made within the US from those outside.
• Complementary evidence from ping, matchmaking, and her known presence at certain events, such as Japan for 3D recordings, or US for off collabs, etc, further supports the timeline interpretation.
• During "not US" phases, no instances of unusually low ping or physical presence in specific places that would contradict the idea of her living outside the US were found.
• During "not US" phases, she showed increased paranoia in showing ping and her PC specs, compared to when she's on a US setup.

For any questions, suggestions, corrections, feedback or other, contact me anonymously or not at gauss.guru295@passinbox.com.