pvspitch — Track the pitch and amplitude of a PVS signal.
kamp -- bin amplitude
kfr -- bin frequency
fsig -- an input pv stream
kthresh -- analysis threshold (between 0 and 1) relative to 0dBfs. Higher values will eliminate low-amplitude components from the analysis.
Here is an example of the pvspitch opcode. It uses the file pvspitch.csd. This example uses realtime audio input but can be used for audiofile input as well.
Example 311. Example of the pvspitch opcode
See the sections Real-time Audio and Command Line Flags for more information on using command line flags.<CsoundSynthesizer> <CsOptions> ; Select audio/midi flags here according to platform ; Audio out Audio in -odac -iadc ;;;RT audio I/O ; For Non-realtime ouput leave only the line below: ; -o pvspitch.wav -W ;;; for file output any platform </CsOptions> <CsInstruments> sr = 44100 kr = 4410 ksmps = 10 nchnls = 1 instr 1 ifftsize = 1024 iwtype = 1 /* cleaner with hanning window */ a1 inch 1 ;Realtime audio input ;a1 soundin "input.wav" ;Use this line for file input fsig pvsanal a1, ifftsize, ifftsize/4, ifftsize, iwtype kfr, kamp pvspitch fsig, 10 adm oscil kamp, kfr, 1 out adm endin </CsInstruments> <CsScore> i 1 0 30 e </CsScore> </CsoundSynthesizer>