Steve:
But is it a Log 2 scale, rather than a Log 10 scale? In Log 2, there is a
doubling of frequencies on the vertical scale: 500, 1000, 2000, 4000, 8000,
16000 kHz. In a Log 10, it goes 10, 100, 1000, 10,0000 Hz.
A Log 10 scale will not produce the right result. It must be a Log 2 scale.
Also, I use Macs so I guess I can't use Gram.
Lang
Lang ---
The program "Gram", available on the web, gives the option of using a log
scale for
frequencies on sonograms.
Also, I'll include this feature in the next release of Dora.
It's a good idea. Thanks!
Steve P
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>From Tue Mar 8 18:23:28 2005
Message: 1
Date: Wed, 12 Mar 2003 16:58:18 -0500 (EST)
From: Stephan Pelikan <>
Subject: Re:Dora sound manipulation program
Friends:
There's a new version of the sound manipulation program I've been
playing with at http://math.uc.edu/~pelikan/Dora. I don't think of Dora
so much as a sound editor as a "sound swiss army knife", with handy, but
sometimes hard to find features.
There's a number of new capabilities included in this release,
including a "PhraseGrab" utility that listens to your soundcard and
extracts phrases to audio files on the disk when it encounters them.
(The criteria defining a phrase as specified by the same parameters
that the Phraser module in Dora uses). There's also a "LibrarySA"
program that computes correlations between rms power in lists of audio
files. The Instructions.html file has an example of using this program
to classify Northern Cardinal songs as to type.
Also, the main Dora program now includes a module to calculate the bearings
to a sound based on time of arrival of the sound at a pair of microphones.
This works much better than I had any reason to hope, and the documentation
reports on some recent experiments with the module.
For several months now I've actually used Dora as my main audio editor
and sonogram generator (without a single complaint). The programs are
all free, free software, and written in JAVA so they work on most
platforms.
As always, I'd truely appreciate feedback (bug reports, complaints,
suggestions, comments, additional code, etc.)
Thanks,
Steve Pelikan
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