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SubjectRe: Elsemi, maybe you can help with Yamaha ADPCM? Reply to this message
Posted byPurge
Posted on09/22/04 12:04 PM



Alright, thank you, I will give it a shot. I am handling it from a file and perhaps im not handling my block sizes correctly. I will experiment around a bit. Thank you once again for your help.
> > > > I'm having a small problem, I want to be able to encode yamaha adpcm files
> > and
> > > > decode them as well. I am aware bero has made a program, however it doesnt
> > > seem
> > > > to work properly, I get ALOT of static on decode, with the volume ever
> > > changing.
> > > > Do you or does anyone here have any technical notes regarding this or know
> > of
> > > > any program or even an ACM codec capable of handiling this format? I did
> > > notice
> > > > its ID tag was 0x20, which is Yamaha's ADPCM format, so I am certain thats
> > > what
> > > > this is. Thanks so much.
> > > >
> > >
> > >
> > > which yamaha chip in particular?
> > >
> > >
> > > You learn something old everyday...
> > >
> >
> > sorry for the VERY late reply, was without a computer. The type is aica adpcm
> > and from what ive read it is similar to the YMZ280B chip.
> >
>
> Yes, AICA adpcm is the same than YMZ280B, I've done the Chankast AICA emulation
> and it works fine.
> Are you decoding "online" from an emulator or just a stream stored in a file?
> volume changes often happen when you miss an adpcm sample, if you are
> resampling, keep in mind that you can't just skip apdcm samples, you must
> process all samples even if they don't get written to the output buffers due to
> the resampling.
>


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Entire Thread
Subject  Posted byPosted On
*Elsemi, maybe you can help with Yamaha ADPCM?  Purge07/30/04 07:38 PM
.*Re: Elsemi, maybe you can help with Yamaha ADPCM?  finaldave08/01/04 06:30 PM
..*Re: Elsemi, maybe you can help with Yamaha ADPCM?  Purge09/21/04 11:39 PM
...*Re: Elsemi, maybe you can help with Yamaha ADPCM?  ElSemi09/22/04 07:50 AM
.....Re: Elsemi, maybe you can help with Yamaha ADPCM?  Purge09/22/04 12:04 PM