Digital signal processing techniques for pitch shifting and time scaling of audio signals

Szymon Buś , Konrad Jędrzejewski


In this paper, we present the techniques used for modifying the spectral content (pitch shifting) and for changing the time duration (time scaling) of an audio signal. A short introduction gives a necessary background for understanding the discussed issues and contains explanations of the terms used in the paper. In subsequent sections we present three dierent techniques appropriate both for pitch shifting and for time scaling. These techniques use three dierent time-frequency representations of a signal, namely short-time Fourier transform (STFT), continuous wavelet transform (CWT) and constant-Q transform (CQT). The results of simulation studies devoted to comparison of the properties of these methods are presented and discussed in the paper.
Author Szymon Buś (FEIT / PE)
Szymon Buś,,
- The Institute of Electronic Systems
, Konrad Jędrzejewski (FEIT / PE)
Konrad Jędrzejewski,,
- The Institute of Electronic Systems
Publication size in sheets0.5
Book Romaniuk Ryszard (eds.): Proc. SPIE. 10031, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2016, vol. 10031, 2016, P.O. Box 10, Bellingham, Washington 98227-0010 USA , SPIE , ISBN 9781510604858, [781510604865 (electronic) ], 1170 p., DOI:10.1117/12.2257157
Keywords in Englishpitch shifting, time scaling, short-time Fourier transform, continuous wavelet transform, constant-Q transform
ProjectResearch on measurement, circuit and signal theory and electronic circuits and systems. Project leader: Romaniuk Ryszard, , Phone: +48 22 234 7986, +48 22 234 5360, start date 15-06-2015, end date 31-12-2016, ISE/2015/DS, Completed
WEiTI Działalność statutowa
Languageen angielski
1003157K_J_Bus.pdf 1.07 MB
Score (nominal)15
Score sourceconferenceIndex
ScoreMinisterial score = 15.0, 01-02-2020, BookChapterMatConfByConferenceseries
Ministerial score (2013-2016) = 15.0, 01-02-2020, BookChapterMatConfByConferenceseries
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