Re: sound pitch shifting in 0.87.0

I noticed this pitch variation too, in CPS1 / CPS2 / NeoGeo games mostly. 
Will try some varying some settings and see if it makes any difference.

Filipe Estima


At 09:35 22/10/2004 -0600, you wrote:

>Hello all,
>
>The sound for certain games constantly changes pitch while playing.  I
>haven't used AdvanceMAME since around version .74(?) when I seem to
>remember this bug being introduced.  I had hoped the issue would be
>resolved by now, however it still exists!
>
>IIRC the bug came about when the author moved away from the MAME sound
>code, and introduced his own?  I also remembered there being a fix for
>this by commenting out a certain line of code, which I found by browsing
>the archives:
>
> > You can partially revert back to the old behavior by removing (or
> > commenting) from the file advance/osd/emu.h the line :
> > #define USE_INTERNALRESAMPLE 1
>
>I noticed an option in the 0.87 advmame.rc called `sound_resamplefilter'
>which I set to "no".  This did alleviate some of the nasty sound pitch
>shifting, however there are still frequent points during gameplay when
>brief (but noticeable) shifts happen.  Is this a totally different
>option altogether, do I still need to comment out that line of code in
>emu.h?
>
>I'm curious if it's possible to completely revert back to the original
>mame sound code, because the sound works perfect in xmame, and I simply
>can't live with improper sound.  I would, however, prefer to use
>AdvanceMAME since in every other way it seems superior to me.
>
>Note: two games where you can really notice this problem are outrun, and
>shangonb.
>
>Any info on this would be appreciated,
>
>Tim.


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