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Class Information
Number: 704/224
Name: Data processing: speech signal processing, linguistics, language translation, and audio compression/decompression > Speech signal processing > For storage or transmission > Normalizing
Description: Subject matter wherein modifications of the speech










Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8655663 Audio signal interpolation device and audio signal interpolation method Feb. 18, 2014
8655652 Apparatus and method for encoding an information signal Feb. 18, 2014
8639517 Relevance recognition for a human machine dialog system contextual question answering based on a normalization of the length of the user input Jan. 28, 2014
8634578 Multiband dynamics compressor with spectral balance compensation Jan. 21, 2014
8626499 Multimedia signal latency management by skipping Jan. 7, 2014
8600764 Determining an initial common scale factor for audio encoding based upon spectral differences between frames Dec. 3, 2013
8571852 Postfilter for layered codecs Oct. 29, 2013
8571226 Automatic polarity adaptation for ambient noise cancellation Oct. 29, 2013
8566086 System for adaptive enhancement of speech signals Oct. 22, 2013
8560330 Energy envelope perceptual correction for high band coding Oct. 15, 2013
8521522 Audio coding/decoding method and apparatus using excess quantization information Aug. 27, 2013
8510104 System and method for low overhead frequency domain voice authentication Aug. 13, 2013
8484267 Weight normalization in hardware without a division operator Jul. 9, 2013
8484022 Adaptive auto-encoders Jul. 9, 2013
8478586 Signal processing apparatus and method, and program Jul. 2, 2013
8478599 Method and apparatus to determine and use audience affinity and aptitude Jul. 2, 2013
8471742 Quantization device, radio-frequency receiver comprising such a device and quantization method Jun. 25, 2013
8463614 Audio encoding/decoding for reducing pre-echo of a transient as a function of bit rate Jun. 11, 2013
8457954 Sound quality control apparatus and sound quality control method Jun. 4, 2013
8447595 Echo-related decisions on automatic gain control of uplink speech signal in a communications device May. 21, 2013
8442819 Distortion-based method and apparatus for buffer control in a communication system May. 14, 2013
8423357 System and method for biometric acoustic noise reduction Apr. 16, 2013
8401844 Gain control system, gain control method, and gain control program Mar. 19, 2013
8391373 Concealment of transmission error in a digital audio signal in a hierarchical decoding structure Mar. 5, 2013
8379880 Methods and systems for determining audio loudness levels in programming Feb. 19, 2013
8374853 Hierarchical encoding/decoding device Feb. 12, 2013
8364477 Method and apparatus for increasing speech intelligibility in noisy environments Jan. 29, 2013
8355908 Audio signal processing device for noise reduction and audio enhancement, and method for the same Jan. 15, 2013
8353058 Methods and systems for detecting rootkits Jan. 8, 2013
8352256 Adaptive reduction of noise signals and background signals in a speech-processing system Jan. 8, 2013
8346542 Apparatus and method for widening audio signal band Jan. 1, 2013
8321209 System and method for low overhead frequency domain voice authentication Nov. 27, 2012
8315853 MDCT domain post-filtering apparatus and method for quality enhancement of speech Nov. 20, 2012
8315859 Efficient filtering with a complex modulated filterbank Nov. 20, 2012
8280730 Method and apparatus of increasing speech intelligibility in noisy environments Oct. 2, 2012
8265929 Embedded code-excited linear prediction speech coding and decoding apparatus and method Sep. 11, 2012
8255215 Method and apparatus for locating speech keyword and speech recognition system Aug. 28, 2012
8217811 Bitcount determination for iterative signal coding Jul. 10, 2012
8219393 Error concealment method and apparatus for audio signal and decoding method and apparatus for audio signal using the same Jul. 10, 2012
8214205 Speech enhancement apparatus and method Jul. 3, 2012
8209167 Mobile radio terminal, speech conversion method and program for the same Jun. 26, 2012
8185386 Method and apparatus for performing packet loss or frame erasure concealment May. 22, 2012
8165874 System, method, and program product for processing speech ratio difference data variations in a conversation between two persons Apr. 24, 2012
8160866 Speech recognition method for both english and chinese Apr. 17, 2012
8145478 Apparatus and method for widening audio signal band Mar. 27, 2012
8126708 Systems, methods, and apparatus for dynamic normalization to reduce loss in precision for low-level signals Feb. 28, 2012
8121834 Method and device for modifying an audio signal Feb. 21, 2012
8103020 Enhancing audio signals by nonlinear spectral operations Jan. 24, 2012
8054948 Audio experience for a communications device user Nov. 8, 2011
8041561 Multi-channel codebook dependent compensation Oct. 18, 2011

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