Sound pitch bending issue

Amiga1992 · 07 February 2012, 21:03

YEah, I read this thread: http://eab.abime.net/showthread.php?t=56704

I am getting pitch changes on music when I use VSYNC. It's a slight pitch bending that happens from time to time.
It's gone when VSync is off.
Auto VSync just plays music at a much higher pitch than intended.

Is this normal or does it have to do with my setup? I tried on two different PCs though, and I seem to be getting similar results, only varying on how often and where the bends happen.

Toni Wilen · 08 February 2012, 10:52

Configuration information missing.. VSync works very differently on non-fastest and fastest possible CPU modes.

"Traditional" VSync can't ever work properly in fastest possible CPU modes and may have issues in normal modes too.

Try latest betas and low latency vsync mode. (It is still WIP but should work much better)

Amiga1992 · 08 February 2012, 11:51

I have an i7-2640M @ 2.80Ghz (x2), 4GB RAM, Intel HD3000 graphics card (one of thsoe shared memory things), Conexant 20672 SmartAudio HD audio hardware, Windows 7 Professional 64-bit.

It could be that I was using Fastest Possible, but I tried without it too and same happened. Still, Low Latency gives the wrong pitch at music.

I will try the latest beta and let you know!

Toni Wilen · 08 February 2012, 11:55

If you mean "wrong pitch" by 60Hz/50Hz speedup: there is nothing to do, you need 50Hz or 100Hz display. It is the only solution.

Amiga1992 · 08 February 2012, 12:07

Now that you mention it, i did try that on my TV @ 1080P/60Hz. That's probably it!
Will test the pitchbending issues with the beta 15 I just downloaded.

07 February 2012, 21:03	#1
Amiga1992 Registered User Join Date: May 2001 Location: ? Posts: 19,645	Sound pitch bending issue YEah, I read this thread: http://eab.abime.net/showthread.php?t=56704 I am getting pitch changes on music when I use VSYNC. It's a slight pitch bending that happens from time to time. It's gone when VSync is off. Auto VSync just plays music at a much higher pitch than intended. Is this normal or does it have to do with my setup? I tried on two different PCs though, and I seem to be getting similar results, only varying on how often and where the bends happen.

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08 February 2012, 10:52	#2
Toni Wilen WinUAE developer Join Date: Aug 2001 Location: Hämeenlinna/Finland Age: 49 Posts: 26,502	Configuration information missing.. VSync works very differently on non-fastest and fastest possible CPU modes. "Traditional" VSync can't ever work properly in fastest possible CPU modes and may have issues in normal modes too. Try latest betas and low latency vsync mode. (It is still WIP but should work much better)

08 February 2012, 11:51	#3
Amiga1992 Registered User Join Date: May 2001 Location: ? Posts: 19,645	I have an i7-2640M @ 2.80Ghz (x2), 4GB RAM, Intel HD3000 graphics card (one of thsoe shared memory things), Conexant 20672 SmartAudio HD audio hardware, Windows 7 Professional 64-bit. It could be that I was using Fastest Possible, but I tried without it too and same happened. Still, Low Latency gives the wrong pitch at music. I will try the latest beta and let you know!

08 February 2012, 11:55	#4
Toni Wilen WinUAE developer Join Date: Aug 2001 Location: Hämeenlinna/Finland Age: 49 Posts: 26,502	If you mean "wrong pitch" by 60Hz/50Hz speedup: there is nothing to do, you need 50Hz or 100Hz display. It is the only solution.

08 February 2012, 12:07	#5
Amiga1992 Registered User Join Date: May 2001 Location: ? Posts: 19,645	Now that you mention it, i did try that on my TV @ 1080P/60Hz. That's probably it! Will test the pitchbending issues with the beta 15 I just downloaded.

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