Data processing: measuring – calibrating – or testing – Measurement system – Measured signal processing
Reexamination Certificate
2008-04-15
2008-04-15
Nghiem, Michael (Department: 2863)
Data processing: measuring, calibrating, or testing
Measurement system
Measured signal processing
Reexamination Certificate
active
07359838
ABSTRACT:
The invention relates to a method of processing a noisy sound signal and to a device for implementing said method. The inventive method includes the following steps which are performed for each frame of a noisy sound signal, consisting in: applying a frequency-domain transform; estimating a power spectral density (PSD) of the noise for the frame; calculating a first noise reduction filter from the estimated PSD of the noise and from an estimation of the PSD of a wanted signal corresponding to the frame; filtering the frame with the aid of the calculated noise reduction filter, in order to obtain a first noise-corrected estimation for the frame; and obtaining a frame of a second signal from the first noise-corrected estimation of the aforementioned frame, comprising harmonics which are essentially at the same positions as the wanted signal corresponding to the frame of the noisy sound signal.
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Marro Claude
Plapous Cyril
Scalart Pascal
France Telecom
Khuu Cindy D.
McKenna Long & Aldridge LLP
Nghiem Michael
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