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Acoustics, Speech, and Signal Processing, IEEE International Conference on (2009)
Taipei, Taiwan
Apr. 19, 2009 to Apr. 24, 2009
ISBN: 978-1-4244-2353-8
pp: 3233-3236
Minh Ta , Department of Electrical and Computer Engineering, FAMU-FSU College of Engineering, Florida State University, USA
Hieu Thai , Department of Electrical and Computer Engineering, FAMU-FSU College of Engineering, Florida State University, USA
Victor DeBrunner , Department of Electrical and Computer Engineering, FAMU-FSU College of Engineering, Florida State University, USA
ABSTRACT
This paper proposes a causal approach to adaptive estimation of time-frequency localized signals using Adaptive Notch Filters (ANF). By adaptively estimating the envelope of each sinusoidal component, it is possible to specify the tracking quality and restart the ANF unit whenever the tracked sinusoid disappears, as well as preventing the ANF from “tracking” non-existent sinusoids (the frequency mis-lock situation). Employing multiple ANFs allows an efficient approach to tracking time-frequency localized signals such as speech.
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CITATION

V. DeBrunner, H. Thai and M. Ta, "Adaptive tracking in the time-frequency plane and its application in causal real-time speech analysis," Acoustics, Speech, and Signal Processing, IEEE International Conference on(ICASSP), Taipei, Taiwan, 2009, pp. 3233-3236.
doi:10.1109/ICASSP.2009.4960313
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