Question for scruloose

[ginny_t]

linzq asks:

Does anyone happen to know why a 3% frequency vibrato (frequency modulation in the fundamental) cause an amplitude vibrato?


And it reminds me of a conversation about resonating frequencies, and makes me think you might know something about it...

Comments

[linzq.livejournal.com]

cool. =D

[linzq.livejournal.com]

I've come up with an answer - I don't love it -- essentially a 3% freq vibrato would make the frequency deviate from the first formant... thereby 'deboosting' the amplitude. That's all I'm going to say.

Thanks for asking, though.

random synthesis advice from strangers

[91angels.livejournal.com]

simple answer: phase interactions

complex answer: *large mass of FM synthesis equations and bessel functions and other scaryness*

or you are pulling the frequency 3% away from some resonant filter, or there is some modulation between this oscilator and another that it is interfering with, etc. hard to say without details, but my first guess would be on phase interactions between the lfo that it modulating the frequency.

back to building cellular automata driven spectral synthesis engines in mathematica, just taking a break from synth nerdy to troll bunnyhero's journal and saw your post.

Re: random synthesis advice from strangers

[ginny-t.livejournal.com]

*boggles* That went right over my head. But so did the question. Thanks for helping, though!