Yes it is that stretch and pitch change that I can not do well but I
guess it can not be done well at extremes. My thinking was that
Meteors are fairly short events and in order to make them audible I
needed to pitch shift without time compress at about X100.
I can do the lockstep by changing the sample rate on playback very
easy as well in Audition.
To test out Robs thoughts about bass image location and to determine
if it was just wishfull thinking with severe lobes getting in the
way, I tried it.
Linked is a high altitude Jet that I suspect was over 7 miles high.
Mics are about 150' spaced on a very quiet Canadian lakeshore. Time
compression and pitch shifted to check the stereo image of the bass
segment X16. That means that a 16 min file was converted to 1 min
and the pitches were raised x16 as well.
It works, there is a stereo bass image on a distant object when
recorded with wide spaced omnis.
265kb download
http://home.comcast.net/~richpeet/jet.mp3
Rich Peet
PS Rob, I am getting your e-mails but when I send to you it bounces.
--- In Aaron Ximm <>
wrote:
> > I wish to pitch shift up in freq 20 to 100 times.
> > My editor, Audition, can not do it well at these extremes.
>
> Hi Rich,
>
> Do you want to to vary speed as well as pitch, or *only* the pitch?
>
> As you probably know it's a lot easier to find algos that sound
good doing
> varispeed (both in lockstep) than one or the other alone (ie, time
> stretching without altering pitch or vice versa)...
>
> If you can live with varispeed, the package I use (Samplitude) has
a great
> mode in which you can grab sound clips and stretch/compress them
directly
> in the multitrack editing view, even be listening back to find a
good
> sweet spot as you do... ie, it's all realtime processing, not
offline...
>
> I say varispeed as the individual time/pitch stetching is I believe
> limited to 2 octaves up/down.... :/
>
> best,
> aaron
>
>
> http://www.quietamerican.org
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