Random Walk Melody — 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 script employs the concept of a Random Walk to generate a coherent, yet non-repetitive, melodic line. It's a method of algorithmic composition based on stochastic processes, where the next note is chosen based on a probability distribution relative to the current note, rather than being chosen completely at random.

Quick start

Run script… → Random Walk Melody.praat.
Set parameters and click OK.
Output object appears (see Outputs).

Parameters (form fields)

Name (GUI)	Type	Default
Duration	real	15.0
Sampling_frequency	real	44100
Note_duration	real	0.5
Base_frequency	real	220
Scale_degrees	integer	7
Step_probability	real	0.7

Outputs

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