helmut34

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

i am trying to count the beat freq. of the difference between two cosines... i was thinking for a test: 

ultimately i want to measure consonance of incoming audio


counting-difference-tones

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.

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.  

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?

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?


Couldn't you just subtract their frequency values?

Quote:i am trying to count the beat freq. of the difference between two cosines... i was thinking for a test: 

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

There's a CNMAT object called roughness~ that might be interesting to you.

helmut34 wrote on Fri, 27 February 2009 18:37of course i already know the difference tones i am testing this with... i want ultimately to measure the interference of incoming audio

counting difference tones