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From:  Greypins@a...
Greypins@a...
Date:  Thu Nov 8, 2001  7:54 am
Subject:  Re: [vocalist] Your opinions - techie note on vibrato and spectral analysis


In a message dated 11/8/2001 12:48:45 AM Eastern Standard Time,
scol8413@m... writes:
scol8413@m... writes:

<< If the spectral analysis program is set to linear, as most tend to be,
rather than logarithmic (remember that the musical scale is logarithmic),
then the oscillation in the Fo is very hard to see: on a y-axis scale set
to 1-4000Hz, to include the singer's formant region, you'd be looking for a
movement of just 11Hz. If your harmonics were oscillating, so was your Fo
>>

sally,

that's why i made the distinction "visibly", in my original post.
however, in consideration of your response concerning the original discussion
on the difference between a voice's vibrato and a violin's vibrato, it might
have been better to say that they are the same with the distinction being in
degree only.

obviously, it is possible to detect the oscillation of the fundamental
through use of spectral analysis, even though some settings might not show it
very strongly. but, if it is hard to detect on some settings, what does
that say about what we are capable of hearing? in what i call tremolo, i
hear an oscillation of the fundamental but, in what i would call vibrato, i
hear oscillation of overtones (that's not how i put it to myself but, through
spectral analysis, that's what it turned to be). i would go on to say that
i 'feel' as if i produce them differently (could there possibly be a
vibrato-tremolo passaggio?).

spectral analysis would be really useful when purchasing a dog whistle,
one that actually makes a sound instead of just being the tool of a scam.
but, i'd still have to be a dog to hear it.

mike

emusic.com