Re: recording


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Posted by Rick Denney on September 06, 2002 at 10:05:53:

In Reply to: recording posted by IG on September 05, 2002 at 20:59:12:

Fred Young supplied a link to software that produces a spectrogram of sound. A spectrogram is a representation of a Fourier transform of the spetrum, over time. The advantage is that you can see how the notes transition one to the next.

If you just want to analyze specific tones, then the easiest tool to use is CoolEdit from Syntillium. That's what I have used to perform spectral analysis. It doesn't tell you the exact pitches of the overtones, which is a real pity, but you can estimate them graphically and they are approximately in line with the harmonic overtones on most good horns. CoolEdit will show you a waveform at fine enough resolution to count frequencies. I wrote an article about similar experiences in comparing three of my horns, with screen shots from CoolEdit, that may help point you in the right direction.

Ken Sloan has also done a bit of experimenting, and also has a web page showing the results of his efforts.

Rick "with further experiments in the to-do list" Denney



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