fzero~
Examples
Inlets
input [signal]
The signal to be analyzedOutlets
pitch [number]
Estimated fundamental frequency.amplitude [number]
Peak amplitude in analysis vector.onset [bang, list]
Onset detected.Fixed Attributes
These attributes must be set in the object box and determine the behavior of the object at runtime.
autolength [int] (default: 128)
autolength
autolevel [int] (default: 1)
Sets the level at which to perform autocorrelation analysis.
bufmax [int] (default: 4096)
Sets the maximum buffer size.
freqmax [number] (default: 2500)
The maximum frequency, in Hertz, that the object will report.
freqmin [number] (default: 20)
The minimum frequency, in Hertz, that the object will report.
levels [int] (default: 5)
levels
onsetamp [number] (default: 0.1)
fzero~ gives a bang or list out the right outlet when a new event crosses this amplitude threshold.
onsetmode [enum] (default: bang)
Onset detector output: bang or list (pitch, amplitude).
Possible values:
0 = 'bang'
1 = 'list'
onsetperiod [enum] (default: 1024)
This attribute sets the minimum number of samples between reporting any offsets.
Possible values:
0 = '16'
1 = '32'
2 = '64'
3 = '128'
4 = '256'
5 = '512'
6 = '1024'
7 = '2048'
8 = '4096'
onsetpitch [number] (default: 0.8)
fzero~ gives a bang or list out the right outlet when the frequency changes by this amount, in in MIDI notes.
period [enum] (default: 256)
Sets the time period between analyses in samples.
Possible values:
0 = '16'
1 = '32'
2 = '64'
3 = '128'
4 = '256'
5 = '512'
6 = '1024'
7 = '2048'
8 = '4096'
size [enum] (default: 2048)
Sets the buffer size to specify how many samples are analyzed each time.
Possible values:
0 = '128'
1 = '256'
2 = '512'
3 = '1024'
4 = '2048'
5 = '4096'
Dynamic Attributes
These attributes can be modified in the code during execution using the set object
input [signal]
The signal to be analyzed
noisethresh [number] (default: 0.1)
Minimum amplitude for reporting pitches and onsets. If the peak amplitude of the buffer is below this threshold, then fzero~ will report nothing.
See Also
| Name | Description |
|---|---|
| fftstream~ | Fast Fourier Transform |
| ftom | Convert between frequencies and MIDI notes. |
| peakamp~ | Report the maximum amplitude of a signal over a period of time in ms. |
| thresh~ | Detect input above a certain level |
| fzero~ | Fundamental frequency and pitch estimator |
| retune~ | Ztx-based pitch detection and pitchshift |