Lang:
There is really only one logarithm function; log2, loge, and log10 are all
proportional --- constant multiples of each other.
Consequently, any log plot looks exactly like any other log plot. The only
difference is the actual
numbers that appear labeling the vertical axes. So what you're asking for is
a log plot with labels
obtained by doubling. (In the program, the log is probably computed with the
natural log, since that is
the only log many computer languages provide.)
I agree with you that the labels should probably be something like
C,C1,C2,C3..., meaning the
labels should represent doubling of frequencies, and probably the exact
frequencies of notes on a musical scale,
since that is what many of us are trained to "hear" in our heads. (Whether A
is 440, 424, etc. is something else
people could argue about depending on whether they're old music fans or not
:-))
But this is a matter of choice and training. The log scale used in reporting
sound intensity as dB seems to have a
a fundamental justification based on the physiology of hearing.
Didn't the old "Golden Guide" to birds --- the one with sonograms --- have
a picture in which the frequencies
are labeld with notes of the musical scale?
Steve P
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