[Mp4-tech] Re: MPEG-1 Audio reference test streams

[Ralph Sperschneider]

Manish wrote:
> Hi
> I have downloaded MPEG-1 audio test streams from
> http://isotc.iso.org/livelink/livelink/fetch/2000/2489/Ittf_Home/PubliclyAva
> ilableStandards.htm
> But the test streams include .mpg encoded files and raw .pcm file(24bit
> decoded ASCII files) for layer 1 and layer 2. For layer 3 there .bit files
> and reference decoder .exe  which generates .pcm(24bit decoded ASCII files).
> Are these the only files used for checking conformance of MPEG-1 audio
> decoder? 

Dear Manish,
you might find more up-to-date sequences here:
ftp://mpaudconf:adif2mp4@ftp.iis.fraunhofer.de/mpeg1audio-conformance
> What is conformance criteria for and from where can I get it. 

Those criteria are defined in ISO/IEC 11172-4.
> Also is there any utility to convert there reference ASCII vectors to binary
> format?

This we did already, as you can find when looking at the ftp site mentioned above.
Best regards,
Ralph