CD Audio Issues

B14ck W01f · 07 August 2011, 03:35

Hi,
I have got a heap of CD32/CDTV games that I wouldn't mind playing, and with my configurations I use, I am able to boot them up correctly. It's just that when it comes to games that use audio tracks instead of normal music do I experience choppy sound when the CD accesses them (ie: the CD LED light is blinking. I have decided to mount images rather than playing them directly from the CD, and I have tried messing around with my current sound settings to no avail. I don't understand why this happens.

Toni Wilen · 07 August 2011, 18:37

Include winuaebootlog.txt and winuaelog.txt, thanks. (Enable logging in misc panel). Logs will be written to same directory as winuae.

B14ck W01f · 08 August 2011, 09:04

Apologies, here. As you can see, the game I tested this on was Prehistorik, a game that does use CD Audio tracks. In winuaelog.txt, I noticed these lines:

Quote:

39-872 [25 125x263]: Illegal wput at 00cbf09a=00003fff PC=f0062e
39-872 [25 133x263]: Illegal wget at 00cbf01c PC=f00634
39-872 [25 158x263]: Illegal wput at 00cbf09a=fffff2d4 PC=f00654
39-872 [25 164x263]: Illegal wget at 00cbf09a PC=f00658
40-775 [70 070x063]: Illegal instruction: 4e7b at 00F00568 -> 00F00586

Could this be the problem?

Toni Wilen · 09 August 2011, 15:42

Log messages are normal.

Do you get same problem if you change emulation sound device to DirectSound?

B14ck W01f · 10 August 2011, 03:36

Same result.

Edit: I tried the same with OpenAL, but again same problem.

Toni Wilen · 10 August 2011, 15:46

Try disabling sound emulation completely. Does CD audio still have glitches? (CDA is completely separate)

B14ck W01f · 11 August 2011, 09:21

Yes, the glitches are still there even when the sound is disabled.

Toni Wilen · 11 August 2011, 19:22

Does http://www.winuae.net/files/b/winuae.zip work better? If yes, some more testing is needed to find good enough buffer size value.

B14ck W01f · 12 August 2011, 08:58

Yes, it does work now. Thanks.

Toni Wilen · 12 August 2011, 17:10

Great.

Final test: does both linked versions have good CD audio quality?

http://www.winuae.net/files/b/winuae1.zip
http://www.winuae.net/files/b/winuae2.zip

B14ck W01f · 13 August 2011, 09:33

They both work fine, but honestly I can't tell the difference between the two since they both have the 2011.08.12 date stamp. The only thing I noticed is some slight pauses while I was playing the games, but I am certain that this is the result of my hard disc wildly accessing itself. Otherwise, the CD audio quality is goof.

If a certain part of the game loads, an audio track doesn't start for about 2-3 seconds.

Toni Wilen · 13 August 2011, 18:34

Thanks. Only difference between versions was number of CD sectors buffered. Small increase in number of sectors buffered before sending complete buffer to waveout (yes, CDA emulation uses ancient waveout routines, this needs to be improved someday..) was enough to fix this problem.

Start-up delay is usually normal, real CD32 and CDTV have quite slow CD hardware.

10 August 2011, 03:36	#5
B14ck W01f m68k all the way Join Date: Aug 2011 Location: Koalaland Posts: 523	Same result. Edit: I tried the same with OpenAL, but again same problem. Last edited by B14ck W01f; 10 August 2011 at 08:10. Reason: OpenAL

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
14Bit-Noteplayer audio issues	lem79	support.FS-UAE	15	15 October 2012 05:58
Best Audio Config in Winuae for a Creative X-Fi Audio Card	shaf	support.WinUAE	2	14 June 2012 16:27
cd audio	SexyWayne	support.Hardware	4	04 May 2005 01:47
Audio Of The Caribbean	Amigaboy	Retrogaming General Discussion	1	21 November 2003 08:55
Audio	Djay	request.Demos	3	12 November 2002 05:01

07 August 2011, 18:37	#2
Toni Wilen WinUAE developer Join Date: Aug 2001 Location: Hämeenlinna/Finland Age: 49 Posts: 26,570	Include winuaebootlog.txt and winuaelog.txt, thanks. (Enable logging in misc panel). Logs will be written to same directory as winuae.

09 August 2011, 15:42	#4
Toni Wilen WinUAE developer Join Date: Aug 2001 Location: Hämeenlinna/Finland Age: 49 Posts: 26,570	Log messages are normal. Do you get same problem if you change emulation sound device to DirectSound?

10 August 2011, 15:46	#6
Toni Wilen WinUAE developer Join Date: Aug 2001 Location: Hämeenlinna/Finland Age: 49 Posts: 26,570	Try disabling sound emulation completely. Does CD audio still have glitches? (CDA is completely separate)

11 August 2011, 09:21	#7
B14ck W01f m68k all the way Join Date: Aug 2011 Location: Koalaland Posts: 523	Yes, the glitches are still there even when the sound is disabled.

11 August 2011, 19:22	#8
Toni Wilen WinUAE developer Join Date: Aug 2001 Location: Hämeenlinna/Finland Age: 49 Posts: 26,570	Does http://www.winuae.net/files/b/winuae.zip work better? If yes, some more testing is needed to find good enough buffer size value.

12 August 2011, 08:58	#9
B14ck W01f m68k all the way Join Date: Aug 2011 Location: Koalaland Posts: 523	Yes, it does work now. Thanks.

12 August 2011, 17:10	#10
Toni Wilen WinUAE developer Join Date: Aug 2001 Location: Hämeenlinna/Finland Age: 49 Posts: 26,570	Great. Final test: does both linked versions have good CD audio quality? http://www.winuae.net/files/b/winuae1.zip http://www.winuae.net/files/b/winuae2.zip

13 August 2011, 09:33	#11
B14ck W01f m68k all the way Join Date: Aug 2011 Location: Koalaland Posts: 523	They both work fine, but honestly I can't tell the difference between the two since they both have the 2011.08.12 date stamp. The only thing I noticed is some slight pauses while I was playing the games, but I am certain that this is the result of my hard disc wildly accessing itself. Otherwise, the CD audio quality is goof. If a certain part of the game loads, an audio track doesn't start for about 2-3 seconds.

13 August 2011, 18:34	#12
Toni Wilen WinUAE developer Join Date: Aug 2001 Location: Hämeenlinna/Finland Age: 49 Posts: 26,570	Thanks. Only difference between versions was number of CD sectors buffered. Small increase in number of sectors buffered before sending complete buffer to waveout (yes, CDA emulation uses ancient waveout routines, this needs to be improved someday..) was enough to fix this problem. Start-up delay is usually normal, real CD32 and CDTV have quite slow CD hardware.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)