flip or expand the F0 contours — User Guide

Praat script.

Author: Shai Cohen Affiliation: Department of Music, Bar-Ilan University, Israel Version: 0.1 (2025) License: MIT License Repo: https://github.com/ShaiCohen-ops/Praat-plugin_AudioTools

Contents:

What this does Quick start Parameters Outputs

What this does

Praat script.

Process Description: This utility performs advanced manipulation of the Fundamental Frequency (F0) contour of a selected sound. The process is based on PSOLA (Pitch Synchronous Overlap and Add) resynthesis, utilizing Praat's Manipulation object to separate the pitch track from the sound's spectral content, modify the F0, and then resynthesize the audio without changing the duration or spectral quality (timbre).

Quick start

In Praat, select a Sound object.
Run script… → flip or expand the F0 contours.praat.
Set parameters and click OK.
Output object appears (see Outputs).

Parameters (form fields)

Name (GUI)	Type	Default
minimum_pitch	positive	70
maximum_pitch	positive	250
expansion_multiplier	positive	1.3
flatten_target	positive	1
output_suffix	sentence	_f0_modified
play_after_processing	boolean	1
keep_intermediate_objects	boolean	0

Outputs

Object name: output
Sample rate: unknown
Normalization: No automatic normalization