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This article is from the MPEG FAQ, by Frank Gadegast phade@cs.tu-berlin.de with numerous contributions by others.

54 Someone told me that, with Layer-3, the codec delay would depend on the actual audio signal, varying over the time. Is this really true? (MPEG Audio Layer-3 Applications)

No. The codec delay does not depend on the audio signal.With all Layers,
the delay depends on the actual implementation used in a specific codec, so
different codecs may have different delays. Furthermore, the delay depends
on the actual sample rate and bitrate of your codec.

 

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• prev: 53 For some applications, a very short delay is of critical importance: e.g. in a feedback link, a reporter can only talk intelligibly if the overall delay is below around 10 ms. Here, do I have to forget about MPEG audio at all? (MPEG Audio Layer-3 Applications)
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• next: 55 All in all, you sound as if anybody should use Layer-3 for low bitrates. Why on earth do some vendors still offer only Layer-2 equipment for these applications? (MPEG Audio Layer-3 Applications)

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