FormantPath

One of the types of objects in Praat. It maintains a path through a collection of Formant objects, each the result of a formant frequency analysis of the same sound but with a different setting of the analysis parameters.

A FormantPath combines a collection of Formants with an index that indicates which of these formants is preferred at each moment in its time domain. For example, consider a collection with nine Formant objects. These formant objects could be the result of multiple Sound: To Formant (burg)... analyses on the same sound, with a difference only in the "Formant ceiling (Hz)" parameter setting. Suppose that the formant ceilings were chosen as 4093.7, 4303.5, 4524.2, 4756.1, 5000.0, 5256.4, 5525.9, 5809.2, and 6107.0 Hz, respectively. In this way, the collection functions as a set of alternative analyses. The middle one in this set with a ceiling of 5000 Hz corresponds to the result of a "standard" analysis for a male voice.

You can create a FormantPath with Sound: To FormantPath (burg).... The FormantPath example above could have been created from a Sound by:

To FormantPath (burg): 0.005, 5.0, 5000.0, 0.025, 50.0, 0.05, 4

To choose your own path through the alternatives you can use Praat's FormantPathEditor.

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© djmw, October 13, 2020