On Mon, 19 Mar 2012, Patrick Schmalstig / WRRJ Radio wrote:

It's both.  It's MPEG I Layer 2 data (popularly, and misleadingly,
known as 'MP2'), in a Broadcast Wave File container.
WAV is a file container format, not an audio encoding scheme.  As
such, it's perfectly possible (and in fact, common in pro-audio
setups) to have non-PCM data in a WAV file.

NPR's Content Depot delivers recorded programs in precisely that format: MPEG 1 Layer 2 at 256 kbps as a RIFF .WAV file.


Rob
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