Re: [Audacity-nyquist] Using audacity to automatically generate amplitude data
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From: David R. S. <dav...@sh...> - 2007-10-06 07:42:34
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Hi Mitch, Sorry for the delay, I've been away. What's a score follower, what does it do? Does it create some text you want? I don't know how to analyze the spectrum of audio in Audacity using Nyquist (Audacity itself does have some kind of spectrum analyzer, but I don't use visual stuff since I can't see). Roger might be able to suggest something you can do. Another question - do you want something like an "envelope follower" to do some audio work for you? I haven't used these myself so far, but I think vocoders use these to determine the amplitude over time of frequency bands to modulate frequency bands of another signal. part of what I'm asking is, why specifically do you want text information output instead of doing some kind of audio work? Thanks David On Thu, 4 Oct 2007, Mitch Ohriner wrote: > > Hi David, > > Thanks for the quick reply. Say I have an audio recording a piano piece and > my score follower has told the moment of each note in the piece (in > seconds). What I'd like to do is have my plug-in plot the spectrum of the > first .2 seconds following each note and either export the spectrum or, > ideally, create a matrix of amplitude values correlated to each note in the > piece. > > Does that sound doable? > > -M > -- David R. Sky http://www.shellworld.net/~davidsky/ |