> I've been doing some tests on the accuracy of decoder implementations.
>
> More specifically, I have carried out the tests for MPEG audio decoder
> compliance spelled out in ISO/IEC 11172-4. The results are interesting, and
> I want to share them:
>
> http://www.mars.org/home/rob/proj/mpeg/compliance.php3
>
> I'd also appreciate feedback. Are the results easy to understand? Is there any
> information that could be added to supplement the results? Are there any other
> relevant links to related information?
>
A full quality-optimized decoder will always fail the test.
The "round to the nearest integer" is the worst thing you can do.
You produce a lot of digital artefacts. Especially slowly grow louder low
frequencies sound worse. I have some real world examples and also some
synthetic signals. Digital artefacts are sounding like a chopped mixture of
whistle, rattle and raze. Very difficult to describe.
On demand I add some examples on my web page (approx. 5 MByte).
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Frank Klemm
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