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low frequencies (was: moles and atrac)

Subject: low frequencies (was: moles and atrac)
From: Dan Dugan <>
Date: Tue, 31 Dec 2002 12:06:20 -0800
Marty Michener, you wrote,

>The classic dilemma, as I discussed with Professor Peter Paul 
>Kellogg ca. 1957,
>is in the commercial recording of the ruffed grouse booming.  HI-FI or NOT
>HI-FI?
>
>If you get a really good recording, as I have recently with my ME-67 at 20
>ft with NO
>bass-roll off, and listen to the WAV on Bose Acoustimass speakers or on my
>Sennheiser headphones, you get better than 95% (I am guessing) of the energy
>below about 100 hz.  Each beat of the grouse wing looks like you grabbed the
>microphone diaphragm and jerked it out and then in for about a 20 ms .
>I can hear it       I can record it         I can play it,
>But on most computer systems, my users who want to learn birds, cannot
>reproduce it.  The same was true of phonograph players in 1957.  The record
>groves were just not far enough apart to give the needle much of a slow jerk.

It really is a dilemma. I'd publish it both ways, with an 
explanation, if that's possible.

-Dan Dugan


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