Noise reduction for automatic speech recognition

R Gemello, F Mana - US Patent 7,376,558, 2008 - Google Patents
Disclosed herein is a noise reduction method for automatic speech recognitionl. A noise
reduction method for automatic speech recognition, including: computing a magnitude …

Signal enhancement via noise reduction for speech recognition

T Takiguchi, M Nishimura - US Patent 7,533,015, 2009 - Google Patents
Provides speech enhancement techniques for extemporaneous noise without a noise
interval and unknown extemporaneous noise. Signal enhancement includes: subtracting a …

Noise suppressor for speech recognition

IJ Tashev, A Acero, JG Droppo - US Patent 8,615,393, 2013 - Google Patents
A noise suppressor for altering a speech signal is trained based on a speech recognition
system. An objective function can be utilized to adjust parameters of the noise suppressor …

Noise suppressor for robust speech recognition

D Yu, L Deng, Y Gong, J Wu, A Acero - US Patent 8,185,389, 2012 - Google Patents
Described is noise reduction technology generally for speech input in which a noise-
suppression related gain value for the frame is determined based upon a noise level …

Speech dialect classification for automatic speech recognition

G Talwar, R Chengalvarayan - US Patent App. 12/916,962, 2012 - Google Patents
According to one embodiment of the invention, there is provided a method of speech
recognition including the steps of:(a) receiving speech via a microphone;(b) pre processing …

Noise reduction system and method

J Vergin - US Patent App. 10/024,446, 2003 - Google Patents
(57) ABSTRACT A System, method and computer program product for per forming noise
reduction. The System receives a Sound Signal determined to include Speech, then …

Pitch model for noise estimation

JG Droppo, A Acero, L Buera - US Patent 7,925,502, 2011 - Google Patents
BACKGROUND Speech recognizers receive a speech signal input and gen erate a
recognition result indicative of the speech contained in the speech signal. Speech …

Adaptive Noise Cancellation

X Zhang, VR Viswanathan, T Unno - US Patent App. 12/167,026, 2009 - Google Patents
Speech-free noise estimation by cancellation of speech content from an audio input where
the speech content is estimated by noise suppression. Adaptive noise cancellation with …

Adaptively reducing noise to limit speech distortion

M Every, C Avendano - US Patent 9,502,048, 2016 - Google Patents
The present technology provides adaptive noise reduction of an acoustic signal using a
Sophisticated level of control to balance the tradeoff between speech loss distortion and …

Method and system for recognizing a boundary between contiguous sounds for use with a speech recognition system

SPT Wang - US Patent 5,812,973, 1998 - Google Patents
Boundaries of spoken sounds in continuous speech are identified by classifying delimitative
sounds to provide improved performance in a speech-recognition system. Delimitative …