The suggestion to transfer music from the phonograph pickup to WAV
file with the preemphasis intact and then apply deemphasis to the WAV
file is a great idea.  Okay, so far, but where does one find an RIAA
(or earlier) deemphasis filter for WAV files?  Does this filter come
pre-built in any of the audio software packages?

I use Cool Edit Pro and Protools LE.  I can dig up an old deemphasis
spec and build a filter that copies it.  How do the rest of you do
deemphasis in WAV format?

Bill Finch