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Re: Pitch shifting

Subject: Re: Pitch shifting
From: Mike Feldman <>
Date: Fri, 18 Jun 2004 22:25:04 -0500
Rich Peet wrote:

> Then:
> first half is straight binaural. second half the <150 cycles were 
> replaced with an omni pair at a 100 foot separation on each side.
> 
> a horse choking 2.5 meg download
> http://home.comcast.net/~richpeet/widebasstest.mp3

This is that same scene as the 16x speedup, right?

I listend a few times through Tannoy passive Reveals off of
Mac sound-out, then switched to headphones through iMic --
1st Senn HD 280pro (closed), then HD 600s (open).  I prefer
the straight binaural with all three listening modes, and
I prefer the HD 600s for "being there".

Let me suggest a few conjectures for why I don't like the
wide baseline bass:

     It's decorrelated from the corresponding HF parts because
     of the separation from the close-spaced pair.  That means
     you can hear the low end in each ear seperately from the
     other ear and the high parts.

     mp3 compression aritfacts.

Rich, can you estimate the path of the jet with respect to
the acoustic baseline?  I take it that it did not pass directly
overhead, nor was it parallel to the line of the mics.  I assume
the widespread mics were on the same axis as the binaural pair.

Also, was the binaural pair and the wide pair the same model mics?

Thanks for doing the recording, processing and sharing -- I'm
blowing all my recording time on mundane things like music.
I like that skeeter or whatever off to the right just at the end.

-- Mike


________________________________________________________________________
________________________________________________________________________


"Microphones are not ears,
Loudspeakers are not birds,
A listening room is not nature."
Klas Strandberg
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