PatentDOI
Method of cascading noise reduction algorithms to avoid speech distortion
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TLDR
In this paper, a method of reducing noise by cascading a plurality of noise reduction algorithms is provided, with the final noise reduction algorithm in the sequence providing the system output signal.Abstract:
A method of reducing noise by cascading a plurality of noise reduction algorithms is provided. A sequence of noise reduction algorithms are applied to the noisy signal. The noise reduction algorithms are cascaded together, with the final noise reduction algorithm in the sequence providing the system output signal. The sequence of noise reduction algorithms includes a plurality of noise reduction algorithms that are sufficiently different from each other such that resulting distortions and artifacts are sufficiently different to result in reduced human perception of the artifact and distortion levels in the system output signal.read more
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References
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PatentDOI
Noise reduction system
TL;DR: Noise in a speech-plus-noise input signal is suppressed by splitting the input signal into spectral channels and decreasing the gain in the each channel which has a low signal-to- noise ratio (SNR).
Proceedings ArticleDOI
A voice activity detector employing soft decision based noise spectrum adaptation
Jongseo Sohn,Wonyong Sung +1 more
TL;DR: A novel noise spectrum adaptation algorithm using the soft decision information of the proposed decision rule is developed, which is robust, especially for the time-varying noise such as babble noise.
Proceedings Article
Evaluation of a noise-robust DSR front-end on Aurora databases.
Duncan Macho,Laurent Mauuary,Bernhard Noé,Yan Ming Cheng,Douglas Ralph Ealey,Denis Jouvet,Holly Louise Kelleher,David Pearce,Fabien Saadoun +8 more
TL;DR: A noise-robust front- end designed within a collaboration of Motorola, France Télécom and Alcatel for the ETSI standardization of the advanced front-end for distributed speech recognition (DSR).
Patent
Noise suppression based upon bark band weiner filtering and modified doblinger noise estimate
TL;DR: In this article, an input signal is converted to frequency domain by discrete Fourier analysis and divided into Bark bands, and a noise estimate is subtracted from the signal in each band.
PatentDOI
Method and apparatus for enhancing noise-corrupted speech
TL;DR: In this paper, a noise suppression device receives data representative of a noise-corrupted signal which contains a speech signal and a noise signal, divides the received data into data frames, and then passes the data frames through a pre-filter to remove a dc-component and the minimum phase aspect of the noise.