counting difference tones
i am trying to count the beat freq. of the difference between two cosines… i was thinking for a test:
and counting bangs per second… but it doesn’t work… instead zerox (however i try to use it) only ever seems to give me the number of crossings for the highest freq.–regardless of what else is going on…
shouldn’t i get a fluctuation in crossings per what other waves are fed into a single zerox object?
is there a more logical way to count beating?
ultimately i want to measure consonance of incoming audio
If I’m understanding you correctly, this approach will not work because the signal will actually be crossing zero many times within each beat unless the frequency is so low it is inaudible.
You may have to use an object that detects a peak amplitude and set its threshold at or close to the cycle~’s amplitude.
thanks… trying that
first… there’s no threshold setting for peakamp
instead we are setting the period for reporting our highest amplitude
but, setting it to a super short period revealed that the only amplitudes were zero and unity… yet i can hear that x times a sec (the beat freq.) the crossings line up… shouldn’t those ticks be louder? or is that psychoacoustic?
|i am trying to count the beat freq. of the difference between two cosines… i was thinking for a test:|
Couldn’t you just subtract their frequency values?
of course i already know the difference tones i am testing this with… i want ultimately to measure the interference of incoming audio
|helmut34 wrote on Fri, 27 February 2009 18:37|
|of course i already know the difference tones i am testing this with… i want ultimately to measure the interference of incoming audio|
There’s a CNMAT object called roughness~ that might be interesting to you.
looking into it… thanks