Time-domain scrambling of audio signals

Versione 1.1.0.0 (165 KB) da Dan Ellis
Scramble audio signals by shuffling short-time windows
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Aggiornato 15 nov 2010

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These routines scramble an audio file by moving around short, overlapping windows within a local window. They can be used to create new versions of existing recordings that preserve the spectral content over longer time scales, but remove structure at shorter timescales. This can be useful e.g. for making speech unintelligible.

Routines are also included to shuffle Gammatone subbands independently, for further scrambling.

Code is also available from http://www.ee.columbia.edu/~dpwe/resources/matlab/scramble/

Includes Gammatone / ERB filtering routines lightly adapted from Malcolm Slaney's Auditory Toolbox,
http://cobweb.ecn.purdue.edu/~malcolm/interval/1998-010/

Cita come

Dan Ellis (2024). Time-domain scrambling of audio signals (https://www.mathworks.com/matlabcentral/fileexchange/29396-time-domain-scrambling-of-audio-signals), MATLAB Central File Exchange. Recuperato .

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Creato con R2010b
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Versione Pubblicato Note della release
1.1.0.0

Updated with improved (refactored) code, include acknowledgment of the use of Malcolm Slaney's code as a starting point.
1.0.0.0