(cache) Eternal SPU 1.5beta2

**CKemu** · December 31st, 1969

I haven't seen this posted anywhere, so whilst this news is a tiny bit old (Beta was released Aug 22, 2005), it is certainly worth drawing to peoples attention!

Eternal SPU (a PlayStation 1 Sound Plugin) has had a new beta update, this brings us to 1.5 beta2. Always fantastic to see such a brilliant PlayStation 1 SPU plugin being updated and worked on. Note this is a beta so there may be stability / sound issues, so unless you are adventurous we recommend you stick to the last 'official' release.

I can't read Japanese particulary well, so as for changes, I am unsure, try it, you might like it!

» Official Forums

» Download Eternal SPU 1.5 Beta 2: here

__________________

Genius_GZA · September 5th, 2005

checking this out now, thx

__________________
Intel Core i7 920, Gigabyte Radeon 5870, 6 GB DDR3 OCZ RAM, Windows XP

**hushypushy** · September 5th, 2005

i cant find the changelog

__________________
Dedicated to mediocrity and repetition since 1994.

Keith · September 5th, 2005

Yeah I saw this posted on EF by PsyMan back on the 22nd of August and a few other sites. It's old news but I guess better old news then no news.

__________________

Emulation64.com | EFx2Blogs Forums | EFx2Blogs - Sign Up For Your Own Free EFx2Blog Today!

amano2 · September 5th, 2005

Did one acutally try it out?

__________________
the guy known as amano, before Bobbi messed with the emuforums and killed his account.

**hushypushy** · September 5th, 2005

yeah, a lot of people have tried it out, it's been out for a while

n_w95482 reported that it works fine, but he got a lot of errors in the DOS window with ePSXe.

the SSSPSX website reported that the beta of 1.50 uses a lot less CPU usage than 1.41 (at least i think that's what it said, i may have misread).

__________________
Dedicated to mediocrity and repetition since 1994.

ShadowDancer · September 7th, 2005

What's up with CK's date? December 31st, 1969?

**hushypushy** · September 7th, 2005

its a newsposting glitch.

__________________
Dedicated to mediocrity and repetition since 1994.

Datana · September 8th, 2005

I can't read Japanese very well, but from what I can make out of the changelog, most of the changes relate to a new reverb engine. This new engine appears to be based off of research into the reverb behaviour of a "real" PS2, and should have significantly better accuracy than Neill's version of reverb. In addition, some more Tales of Destiny and Valkyrie Profile audio bugs related to IRQ appear to be partially fixed (via the "Force interruption flag7" checkbox), FIR interpolation was added to the new reverb engine, and some noise (RNG algorithm) and volume bugs were fixed. There's a bunch of technical stuff in the changelog as well about specific changes, but it's beyond my translation skills.

**hushypushy** · September 8th, 2005

can you link me to the changelog i cant even find it

__________________
Dedicated to mediocrity and repetition since 1994.

Datana · September 8th, 2005

It's included in the archive itself -- the file titled 変更点.txt. Here's what it says; hopefully, you can make more sense of it than I can:

・新リバーブを実装。独田地獄斎氏の解析結果を参考に新規実装。(05.06.26) by Yano

・新リバーブのLPFの使い方を修正。(05.06.28) by Yano
LPFを壁の反射係数の周波数特性の模擬に使うようにした。独田地獄斎氏は単に入力のFIRと共用してLP F(IIR)が使われていると考えているようだが、プリセットのパラメータでは殆ど聴感上の効果は得られない。また、Neill Corlett氏は初期反射の中で用いているが、使い方が間違っているため残響において実機との相違を生んでしまっている。

・新リバーブの初期反射(Wall Reflection)の左右の扱いを修正。(05.06.29) by Yano
初期反射の左右の扱いについてプリセットのEcho等のパラメータ設定を見ると独田地獄斎氏の結果は間違っていそう(Corlett氏が正しそう)なので、修正した。

・新リバーブの出力部をFIRで補間(22k->44k)するようにした。(05.06.29) by Yano

・新リバーブのLPFの挿入位置を変更。(05.07.04) by Yano

・Reverb off時はWork Areaへの書き込みを停止した。(05.07.04) by Yano

・Neill's に "+1sample"を入れ忘れたバグを修正 (05.07.07) by T.Yano
Neill Corlett氏の解析結果に基づくリバーブ("Neill's")を実装したときに、書き込みにおいて"+1sample"の位置にしていなかったバグを修正した。

・新リバーブにおいて、左、右を1サンプル毎交互に処理するように修正 05.07.07 by T.Yano
実機調査の結果、同一のオフセットに対する書き込みにおいて、まず、左サンプルを処理し、次のサンプルで右を処理することが判明したので、修正した。

・新リバーブのComb Filter内LPFの1sample delayをSPUメモリを使うように修正 05.07.07 by T.Yano
実機調査の結果、SPUメモリの読み出しで実現していることが判明したので、修正した。

・Noiseの乱数発生アルゴリズムを32次M系列(32,22,2,1)から16次M系列(16,13, 12,11)に変更した。 05.07.09 by T.Yano
実機調査の結果、Noise発生多項式が判明したので、修正した。ついでにBit Reverseアルゴリズムをbit数の対数時間で処理できるものに変更。

・Noise発音中はEnvelope.stop()を保留するようにした。 05.07.10 by T.Yano
Noise調査中に、Noise発音中は裏で動いているVAGデコードのflag 1,5のEnvelope.stop()が保留され、NoiseModeが解除された後に実行されることが判明したので、修正した。

・Tales of Destiny, Valkyrie Profileで起こっていたSPU-IRQが期待通り発生しない問題にて、
「SPU IRQ - Force interruption flag7」で解消していたのを、Voice:

rocessVagHeader()で
Flag7時RepeatAddressがSpuIRQAddressだったらIRQを発生させるように変更。(05.07.24) by Iori

・Volume実機解析に基づき、エンベロープ再実装。(05.08.21) by Iori
Volume::getCurrentVolume()は-32768~32767を返すように変更。
上記変更により、SPUのCurrentVolume値Read時の<<1削除, MixerのVolume乗算部のシフト値を14→15に変更。

**hushypushy** · September 8th, 2005

ah i didnt notice. whatever, i'll translate it later....if anyone cares. otherwise i'll just skim it for my own satisfaction

__________________
Dedicated to mediocrity and repetition since 1994.

Kamasutra · September 8th, 2005

Datana, I was just wondering if your mention of the "PS2" was an error or if that is actually what it says. It made me think how great it would be to have an Eternal SPU for PCSX2 and if maybe they were working on that as well. Eternal is definitely my favorite PSX SPU anyway.

blueshift · September 8th, 2005

Quote:

Originally Posted by ShadowDancer

What's up with CK's date? December 31st, 1969?

It's called poor php.

December 31st, 1969	#1 (permalink)
CKemu It's a Spinning Smile! Join Date: Oct 2001 Posts: 5,300	Eternal SPU 1.5beta2 I haven't seen this posted anywhere, so whilst this news is a tiny bit old (Beta was released Aug 22, 2005), it is certainly worth drawing to peoples attention! Eternal SPU (a PlayStation 1 Sound Plugin) has had a new beta update, this brings us to 1.5 beta2. Always fantastic to see such a brilliant PlayStation 1 SPU plugin being updated and worked on. Note this is a beta so there may be stability / sound issues, so unless you are adventurous we recommend you stick to the last 'official' release. I can't read Japanese particulary well, so as for changes, I am unsure, try it, you might like it! » Official Forums » Download Eternal SPU 1.5 Beta 2: here __________________ » Beta Tester for PCSX2 \| ZeroGS KOSMOS \| Satourne \| nullDC \| Dolphin \| Misc Projects « » Intel Core i7 950 D0 @ 3.7GHz \| GeForce 285 GTX \| Corsair Dominator 6GB @ 1866MHz «

September 8th, 2005	#11 (permalink)
Datana Registered User Join Date: Aug 2001 Posts: 28	It's included in the archive itself -- the file titled 変更点.txt. Here's what it says; hopefully, you can make more sense of it than I can: ・新リバーブを実装。独田地獄斎氏の解析結果を参考に新規実装。(05.06.26) by Yano ・新リバーブのLPFの使い方を修正。(05.06.28) by Yano LPFを壁の反射係数の周波数特性の模擬に使うようにした。独田地獄斎氏は単に入力のFIRと共用してLP F(IIR)が使われていると考えているようだが、プリセットのパラメータでは殆ど聴感上の効果は得られない。また、Neill Corlett氏は初期反射の中で用いているが、使い方が間違っているため残響において実機との相違を生んでしまっている。・新リバーブの初期反射(Wall Reflection)の左右の扱いを修正。(05.06.29) by Yano 初期反射の左右の扱いについてプリセットのEcho等のパラメータ設定を見ると独田地獄斎氏の結果は間違っていそう(Corlett氏が正しそう)なので、修正した。・新リバーブの出力部をFIRで補間(22k->44k)するようにした。(05.06.29) by Yano ・新リバーブのLPFの挿入位置を変更。(05.07.04) by Yano ・Reverb off時はWork Areaへの書き込みを停止した。(05.07.04) by Yano ・Neill's に "+1sample"を入れ忘れたバグを修正 (05.07.07) by T.Yano Neill Corlett氏の解析結果に基づくリバーブ("Neill's")を実装したときに、書き込みにおいて"+1sample"の位置にしていなかったバグを修正した。・新リバーブにおいて、左、右を1サンプル毎交互に処理するように修正 05.07.07 by T.Yano 実機調査の結果、同一のオフセットに対する書き込みにおいて、まず、左サンプルを処理し、次のサンプルで右を処理することが判明したので、修正した。・新リバーブのComb Filter内LPFの1sample delayをSPUメモリを使うように修正 05.07.07 by T.Yano 実機調査の結果、SPUメモリの読み出しで実現していることが判明したので、修正した。・Noiseの乱数発生アルゴリズムを32次M系列(32,22,2,1)から16次M系列(16,13, 12,11)に変更した。 05.07.09 by T.Yano 実機調査の結果、Noise発生多項式が判明したので、修正した。ついでにBit Reverseアルゴリズムをbit数の対数時間で処理できるものに変更。・Noise発音中はEnvelope.stop()を保留するようにした。 05.07.10 by T.Yano Noise調査中に、Noise発音中は裏で動いているVAGデコードのflag 1,5のEnvelope.stop()が保留され、NoiseModeが解除された後に実行されることが判明したので、修正した。・Tales of Destiny, Valkyrie Profileで起こっていたSPU-IRQが期待通り発生しない問題にて、「SPU IRQ - Force interruption flag7」で解消していたのを、Voice:rocessVagHeader()で Flag7時RepeatAddressがSpuIRQAddressだったらIRQを発生させるように変更。(05.07.24) by Iori ・Volume実機解析に基づき、エンベロープ再実装。(05.08.21) by Iori Volume::getCurrentVolume()は-32768~32767を返すように変更。上記変更により、SPUのCurrentVolume値Read時の<<1削除, MixerのVolume乗算部のシフト値を14→15に変更。

September 5th, 2005	#2 (permalink)
Genius_GZA GameCube Player! Join Date: Feb 2002 Location: Shaolin Temple , The Tibet Mountains Posts: 1,229	checking this out now, thx __________________ Intel Core i7 920, Gigabyte Radeon 5870, 6 GB DDR3 OCZ RAM, Windows XP

September 5th, 2005	#3 (permalink)
hushypushy the only one you've ever SEEN Join Date: May 2003 Location: San Francisco Posts: 21,979	i cant find the changelog __________________ Dedicated to mediocrity and repetition since 1994.

September 5th, 2005	#4 (permalink)
Keith Emulation64's Animal >:D Join Date: Apr 2001 Location: United States Posts: 1,212	Yeah I saw this posted on EF by PsyMan back on the 22nd of August and a few other sites. It's old news but I guess better old news then no news. __________________ Emulation64.com \| EFx2Blogs Forums \| EFx2Blogs - Sign Up For Your Own Free EFx2Blog Today!

September 5th, 2005	#5 (permalink)
amano2 Registered User Join Date: Apr 2003 Posts: 10	Did one acutally try it out? __________________ the guy known as amano, before Bobbi messed with the emuforums and killed his account.

September 5th, 2005	#6 (permalink)
hushypushy the only one you've ever SEEN Join Date: May 2003 Location: San Francisco Posts: 21,979	yeah, a lot of people have tried it out, it's been out for a while n_w95482 reported that it works fine, but he got a lot of errors in the DOS window with ePSXe. the SSSPSX website reported that the beta of 1.50 uses a lot less CPU usage than 1.41 (at least i think that's what it said, i may have misread). __________________ Dedicated to mediocrity and repetition since 1994.

September 7th, 2005	#7 (permalink)
ShadowDancer Heh... Join Date: Jun 2001 Location: Texas Posts: 1,904	What's up with CK's date? December 31st, 1969?

September 7th, 2005	#8 (permalink)
hushypushy the only one you've ever SEEN Join Date: May 2003 Location: San Francisco Posts: 21,979	its a newsposting glitch. __________________ Dedicated to mediocrity and repetition since 1994.

September 8th, 2005	#9 (permalink)
Datana Registered User Join Date: Aug 2001 Posts: 28	I can't read Japanese very well, but from what I can make out of the changelog, most of the changes relate to a new reverb engine. This new engine appears to be based off of research into the reverb behaviour of a "real" PS2, and should have significantly better accuracy than Neill's version of reverb. In addition, some more Tales of Destiny and Valkyrie Profile audio bugs related to IRQ appear to be partially fixed (via the "Force interruption flag7" checkbox), FIR interpolation was added to the new reverb engine, and some noise (RNG algorithm) and volume bugs were fixed. There's a bunch of technical stuff in the changelog as well about specific changes, but it's beyond my translation skills.

September 8th, 2005	#10 (permalink)
hushypushy the only one you've ever SEEN Join Date: May 2003 Location: San Francisco Posts: 21,979	can you link me to the changelog i cant even find it __________________ Dedicated to mediocrity and repetition since 1994.

September 8th, 2005	#12 (permalink)
hushypushy the only one you've ever SEEN Join Date: May 2003 Location: San Francisco Posts: 21,979	ah i didnt notice. whatever, i'll translate it later....if anyone cares. otherwise i'll just skim it for my own satisfaction __________________ Dedicated to mediocrity and repetition since 1994.

September 8th, 2005	#13 (permalink)
Kamasutra Devil's Advocate Join Date: Feb 2005 Location: Miami, FL Posts: 2	Datana, I was just wondering if your mention of the "PS2" was an error or if that is actually what it says. It made me think how great it would be to have an Eternal SPU for PCSX2 and if maybe they were working on that as well. Eternal is definitely my favorite PSX SPU anyway.