Fundamental frequency and pitch estimator The fzero~ object estimates the fundamental frequency of an an incoming, monophonic audio signal. It performs multiple layers of wavelet transforms on an incoming vector, comparing the spacing between the peaks in each. Cycling '74 MSP MSP Analysis Audio to be analyzed TEXT_HERE Audio to be analyzed TEXT_HERE Estimated fundamental pitch TEXT_HERE Peak amplitude in analysis vector TEXT_HERE onset detected TEXT_HERE TEXT_HERE TEXT_HERE Audio signal to be analyzed audio signal to be analyzed. Maximum frequency to detect The maximum frequency, in Hertz, that the object will report. Minimum frequency to detect The minimum frequency, in Hertz, that the object will report. Amplitude threshold for detecting an onset fzero~ gives a bang or list out the right outlet when a new event crosses this amplitude threshold. Onset detector output: bang or list(pitch, amplitude) TEXT_HERE Number of samples before reporting another onset This attribute sets the minimum number of samples between reporting any offsets. samples TEXT_HERE samples TEXT_HERE samples TEXT_HERE samples TEXT_HERE samples TEXT_HERE samples TEXT_HERE samples TEXT_HERE samples TEXT_HERE samples TEXT_HERE Frequency change threshold for sending bangs fzero~ gives a bang or list out the right outlet when the frequency changes by this amount, in in MIDI notes. Period between analyses in samples Sets the time period between analyses in samples. samples TEXT_HERE samples TEXT_HERE samples TEXT_HERE samples TEXT_HERE samples TEXT_HERE samples TEXT_HERE samples TEXT_HERE samples TEXT_HERE samples TEXT_HERE Analysis buffer size in samples Sets the buffer size to specify how many samples are analyzed each time. samples TEXT_HERE samples TEXT_HERE samples TEXT_HERE samples TEXT_HERE samples TEXT_HERE samples TEXT_HERE Minimum amplitude for reporting pitches and onsets If the peak amplitude of the buffer is below this threshold, then fzero~ will report nothing. Out left outlet: Estimated fundamental frequency in Hertz.

Out middle outlet: Peak amplitude of the analysis buffer at the time of the last analysis. Out right outlet: New note onset detected.