In article , David Looser
wrote:
"tony sayer" wrote in message
...

You went involved in the MP2 codec tests for the development of DAB?..


No, voice codecs only, but the principle is the same. More to the point
I know just how hard it is, and the lengths we had to go to, to
eliminate bias from listening tests.

FWIW I've now had a chance to record some mp3 streams 'broadcast' by some
of the net stations. This meant I could write the results onto a CDRW and
listen to them on some players. Have examples at 128/192/256kbps. What I've
found interesting is that the results *didn't* show that the 'higher the
bitrate the better the sound'. This was a totally uncontrolled test, so is
suspect, but it does strengthen my bias towards feeling that the way the
specific encoder is used (and the details of the sound patterns to be
encoded) can matter more that the output bitrate chosen.

Slainte,

Jim

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