the auto-correlation windows
the size of the auto-correlation windows. must be at least 2.
the minimum lag time in sample frames, corresponding to the maximum frequency accepted
the maximum lag time in sample frames, corresponding to the minimum frequency accepted
the "voicing" threshold for considered for local maxima within minLag
maxLag
.
a factor for favouring higher frequencies. use zero to turn off this feature.
number of candidate periods output. This is clipped to be at least 1. see PitchesToViterbi see Viterbi
the auto-correlation windows
Abstract method which must be implemented by creating the actual UGen
s
during expansion.
Abstract method which must be implemented by creating the actual UGen
s
during expansion. This method is at most called once during graph
expansion
the expanded object (depending on the type parameter U
)
the maximum lag time in sample frames, corresponding to the minimum frequency accepted
the minimum lag time in sample frames, corresponding to the maximum frequency accepted
number of candidate periods output.
number of candidate periods output. This is clipped to be at least 1. see PitchesToViterbi see Viterbi
a factor for favouring higher frequencies.
a factor for favouring higher frequencies. use zero to turn off this feature.
the size of the auto-correlation windows.
the size of the auto-correlation windows. must be at least 2.
the "voicing" threshold for considered for local maxima within minLag
maxLag
.
A peak detection UGen, useful for implementing the auto-correlation based pitch detection method of Paul Boersma (1993). Taking an already calculated auto-correlation of size
size
, the UGen looks for local maxima within a given range.The UGen has two outputs. The first output gives the lag times or periods of the
n
strongest peaks per window (to obtain a frequency, divide the sampling rate by these lag times). The second output gives the intensities of thesen
candidates. If there are less thann
candidates, the empty slots are output as zeroes.the auto-correlation windows
the size of the auto-correlation windows. must be at least 2.
the minimum lag time in sample frames, corresponding to the maximum frequency accepted
the maximum lag time in sample frames, corresponding to the minimum frequency accepted
the "voicing" threshold for considered for local maxima within
minLag
maxLag
.a factor for favouring higher frequencies. use zero to turn off this feature.
number of candidate periods output. This is clipped to be at least 1. see PitchesToViterbi see Viterbi