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Adaptive enhancement of Fourier spectra

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2 Author(s)
Chari, V.R. ; Dept. of Electr. Comput. & Syst. Eng., Boston Univ., MA, USA ; Espy-Wilson, Carol Y.

An adaptive enhancement procedure is presented which emphasizes continuant spectral features such as formant frequencies, by imposing frequency and amplitude continuity constraints on a short-time Fourier representation of the speech signal. At each point in the time-frequency field, the direction of maximum energy correlation is determined by the angle of a linear window at which the energy density within it is closest in magnitude to the point under consideration. Weighted smoothing is then performed in that direction to enhance continuant features

Published in:

Speech and Audio Processing, IEEE Transactions on  (Volume:3 ,  Issue: 1 )

Date of Publication:

Jan 1995

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