amplifiers-----confused

[Ethan Robert Duni]

>... and what is the difference between "pitch and frequency".

-don't know about the amplifier ones, but my "history of electronic music"
prof (Miller Puckette), differentiated them this way:

frequency is what you probably are thinking: it's how often a signal repeats.  

pitch is the note we actually percieve a tone to be. being subjective, this
relationship isn't always linear, so they aren't always the same. some
examples are: in the really low end of the hearing spectrum and in cases
when the fundamental has gotten significantly quieter than some other
harmonics (the signal is still only truly periodic on the frequency of the
fundamental, but you don't hear it that way; shepard tone generators often
make use of this fact for interesting effects like tones that constantly are
decreasing in pitch and yet never go below a given pitch..)

Ethan
Ethan Duni
http://ieng9.ucsd.edu/~ee20waf/file.html