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Speech Envelope and Acoustic Landmarks

version 1.0.0 (1.48 MB) by Alexis
Extracts various amplitude envelopes using different procedures from the speech rhythm literature and detects signals within the envelope.


Updated 09 Jul 2021

From GitHub

View license on GitHub

This package extracts one of four different speech envelopes from the raw speech wave form, and then looks for discrete events (e.g., lower crossings, peaks) within the signal. By combining amongst the envelopes and events, the user can generate different acoustic landmarks with which to analyse speech rhythm, or use as a time series for correlating with neural signals in speech perception experiments.
In addition to these primary functions, a flexible windowing tool is included. It finds natural silent break points within a desired range (e.g., 4 +/- 2 seconds in duration) to break long audio down into shorter segments.
Use acousticLandmarks.m as a starting point and run with included example.wav to see how the package works.
Additional Contributions:
Envelope 3 is adapted from Oganian, Y., & Chang, E. F. (2019). A speech envelope landmark for syllable encoding in human superior temporal gyrus. Science advances, 5(11).
Envelope 4 is adapted from Tilsen, S., & Arvaniti, A. (2013). Speech rhythm analysis with decomposition of the amplitude envelope: characterizing rhythmic patterns within and across languages. The Journal of the Acoustical Society of America, 134(1), 628-639.

Cite As

Alexis (2022). Speech Envelope and Acoustic Landmarks (, GitHub. Retrieved .

Pushing the envelope: evaluating speech rhythm with different envelope extraction techniques, MacIntyre, A.D., Cai, C.Q., and Scott, S.K. (2021).

MATLAB Release Compatibility
Created with R2021a
Compatible with R2017a to R2021a
Platform Compatibility
Windows macOS Linux

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To view or report issues in this GitHub add-on, visit the GitHub Repository.
To view or report issues in this GitHub add-on, visit the GitHub Repository.