[vorbis-dev] slightly different audio output

[Pattara Kiatisevi]

Hi,

I wonder if there is specific requirement or restriction for the decoder
in order to be consider "Vorbis" compliant (or let's say, to be a
"correct" vorbis decoder). I am experimenting with integerized libvorbis
and the decoder delivers the audio data as following, (and compare with
the floating point version below).

$ tail audioout-int.txt
0290670 025e 085c 02cf 0895 0349 08b2 039e 087d
0290680 03ab 07df 03a0 0738 03de 06d6 0458 069f
0290690 04f2 066b 05c3 061a 069d 05cd 0784 057b
02906a0 0865 052e 095d 050e 0a46 04f2 0b0e 04f2
02906b0 0bd0 0505 0c9c 0552 0d48 059f 0dd7 05ec
02906c0 0e88 0675 0f77 0747 1045 07ec 10b0 083f
02906d0 1111 0895 1190 0927 11e4 09a8 1243 0a17
02906e0 12fb 0ab7 1395 0b18 13f6 0b3b 144e 0b22
02906f0 149c 0ab8 14a9 09e6 1509 093d 14a6 07ff
0290700

$ tail audioout-float.txt
0290670 0262 0860 02ee 08a1 0377 08c5 03bc 0884
0290680 03c7 07ea 03be 073c 03d8 06c0 0459 0697
0290690 0506 0664 05bf 0606 06bd 05c6 07b6 0583
02906a0 0883 0528 097d 0505 0a71 04f9 0b23 04dc
02906b0 0beb 0502 0cc6 0564 0d6b 05aa 0df6 05eb
02906c0 0eb4 067a 0fad 0754 1072 07f8 10da 0846
02906d0 114e 08b1 11c8 093f 121c 09b8 128d 0a3d
02906e0 1318 0ac0 1396 0b20 141d 0b5e 1477 0b3c
02906f0 14a0 0aaf 14d1 09f1 14cb 08ed 14a4 07dd
0290700

In theory, must they deliver exactly the same audio output or some
errors are tolerable.

Thank you very much,
Pattara


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Ott Pattara Kiatisevi 				   T L W G
M.Sc. INFOTECH Student, Stuttgart, Germany	http://linux.thai.net/
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