A command that creates a Pitch object from every selected Sound object.
Purpose
to perform a pitch analysis, optimized for speech.
Settings
The settings that control the recruitment of the candidates are:
-
Time step (s) (standard value: 0.0)
-
the measurement interval (frame duration), in seconds. If you supply 0.0, Praat will use a time step of 0.75 / (pitch floor), e.g. 0.01 seconds if the pitch floor is 75 Hz; in this example, Praat computes 100 pitch values per second.
-
Pitch floor (Hz) (standard value: 75 Hz)
-
candidates below this frequency will not be recruited. This parameter determines the length of the analysis window: it will be 3 longest periods long, i.e., if the pitch floor is 75 Hz, the window will be 3/75 = 0.04 seconds long.
Note that if you set the time step to zero, the analysis windows for consecutive measurements will overlap appreciably: Praat will always compute 4 pitch values within one window length, i.e., the degree of oversampling is 4.
-
Pitch ceiling (Hz) (standard value: 600 Hz)
-
candidates above this frequency will be ignored.
Algorithm
This is the algorithm described at Sound: To Pitch (raw ac)..., with all the parameters not mentioned above set to their standard values.
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© Paul Boersma 1996,2003,2023