[vorbis-dev] Decoding with 8 bit-samples

[Michael Smith]

On Tuesday 13 April 2004 00:59, Crock Real wrote:
> Hi!
>
> I'd like to make a stereo 8-bit wav file
> from a stereo (16 bit) ogg vorbis file
> (in delphi, with the vorbisfile).
>
> I use:
>
>     ret := ov_open_callbacks(filein,vf,nil,0,ops_callbacks);
>     if ret = 0 Then
>     begin
>       fileOut :=  TFileStream.Create(savedlg.FileName,fmCreate);
>       repeat
>         ret := ov_read(VF, pcmout, BufferSize, 0, 1, 1, nil); //'cause of
> the 8-bit fileOut.Write(pcmout,ret);
>       until ret = 0;
>     end;
>
> The result will be cracking.... etc (will be unrecognizable). Why?
> If I decode into 16-bit samples, everything is ok!

8 bit audio is usually unsigned, you're decoding as signed. That's probably 
your problem.

Mike

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