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The Teager Energy Operator (TEO) is a nonlinear time domain operator with a delightfully simple implementation that offers a variety of uses in audio applications. We first review the TEO as well as the Discrete Energy Separation Algorithm (DESA). We demonstrate how the TEO can be used to detect missing samples or other kinds of transients. We compare Short Time Fourier T ransform techniques suc h as the well known Phase Vocoder with the Energy Separation operator using synthetic signals. We also study the performance with noise and demonstrate how binomial smoothing can be used to ameliorate noise. We also compare the Hilbert Transform Instantaneous Frequency detection with the TEO. We review the use of the DESA operator in musical instrument analysis and discuss the use of the TEO in signal enhancement. The TEO and DESA show considerable promise for use in audio analysis applications.
Author (s): Kahrs, Mark;
Affiliation:
Laboratory of Acoustics and Audio Signal Processing, Helsinki University of Technology, Espoo Finland
(See document for exact affiliation information.)
AES Convention: 111
Paper Number:5473
Publication Date:
2001-11-06
Session subject:
Signal Processing
DOI:
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Kahrs, Mark; 2001; Audio Applications of the Teager Energy Operator [PDF]; Laboratory of Acoustics and Audio Signal Processing, Helsinki University of Technology, Espoo Finland; Paper 5473; Available from: https://aes.org/publications/elibrary-page/?id=9892
Kahrs, Mark; Audio Applications of the Teager Energy Operator [PDF]; Laboratory of Acoustics and Audio Signal Processing, Helsinki University of Technology, Espoo Finland; Paper 5473; 2001 Available: https://aes.org/publications/elibrary-page/?id=9892
@inproceedings{Kahrs2001audio,
title={{Audio Applications of the Teager Energy Operator}},
author={Kahrs, Mark},
year={2001},
month={nov},
booktitle={Journal of the Audio Engineering Society},
publisher={Paper 5473; AES Convention 111; November 2001},
number={5473},
organization={AES},
}
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