Patents
Sitemap › G10 - Musical instruments; Acoustics › G10L - Speech analysis or synthesis; Speech recognition; Speech or voice processing; Speech or audio coding or decoding › G10L 19 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
Patents for G10L 19 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis (31,960)
11/2002
11/26/2002US6487527 Enhanced quantization method for spectral frequency coding
11/26/2002US6487526 Vector correlator for speech VOCODER using optical processor
11/21/2002WO2002093801A2 Silence detection
11/21/2002WO2002093754A1 Coding and decoding of partially a priori known information
11/21/2002WO2002093562A2 Method for signal reception
11/21/2002WO2002093560A1 Improving transient performance of low bit rate audio coding systems by reducing pre-noise
11/21/2002WO2002093559A1 Device to encode, decode and broadcast audio signal with reduced size spectral information
11/21/2002WO2002093558A1 Device and method for processing an audio signal
11/21/2002WO2002093556A1 Inter-channel signal redundancy removal in perceptual audio coding
11/21/2002WO2002093552A1 Estimating signal power in compressed audio
11/21/2002WO2002093551A2 Method and system for line spectral frequency vector quantization in speech codec
11/21/2002WO2002093550A2 Device for the analysis of an audio signal with regard to the rhythm information using an auto-correlation function
11/21/2002WO2002071395A3 Apparatus for coding scaling factors in an audio coder
11/21/2002US20020173969 Method for decompressing a compressed audio signal
11/21/2002US20020173967 Digital filter for sub-band synthesis
11/21/2002US20020173954 Adaptive media encoding and decoding equipment
11/21/2002US20020173951 Multi-mode voice encoding device and decoding device
11/21/2002US20020173949 Speech coding system
11/21/2002US20020173865 Digital audio signal processing
11/21/2002US20020172193 In-band signaling for data communications over digital wireless telecommunications networks
11/21/2002US20020171566 System and method for processing a compressed data stream
11/21/2002US20020171501 Digital signal encoding apparatus and method, digital signal decoding apparatus and method, and digital signal transmission system
11/21/2002US20020170966 Identification document including embedded data
11/21/2002DE10124189A1 Signal reception in digital communications system involves generating output background signal with bandwidth greater than that of background signal characterized by received data
11/20/2002EP1258997A1 Lossless encoding and decoding system
11/20/2002EP1258996A1 Lossless encoding and decoding system
11/20/2002EP1258995A1 Lossless encoding and decoding system
11/20/2002EP1258994A1 Lossless encoding and decoding system
11/20/2002EP1258993A1 Lossless encoding and decoding system
11/20/2002EP1258715A1 Noise signal analyzer, noise signal synthesizer, noise signal analyzing method, and noise signal synthesizing method
11/20/2002EP1258005A1 Hand-held audio decoder
11/20/2002EP1257938A1 Sensing device for coded electronic ink surface
11/20/2002EP1088300B1 Method for executing automatic evaluation of transmission quality of audio signals
11/20/2002EP0909443B1 Method and system for coding human speech for subsequent reproduction thereof
11/20/2002CN1381041A Transmitter for transmitting signal encoded in narrow band, and receiver for extending band of encoded signal at receiving end, and corresponding transmission and receiving methods, and system
11/20/2002CN1381040A Transmitter for transmitting signal encoded in narrow band, and receiver for extending band of signal at receiving end
11/20/2002CN1380752A Digital data coding device and method
11/20/2002CN1380751A Digital data coding device and method
11/19/2002US6484142 Encoder using Huffman codes
11/19/2002US6484140 Apparatus and method for encoding a signal as well as apparatus and method for decoding signal
11/19/2002US6484139 Voice frequency-band encoder having separate quantizing units for voice and non-voice encoding
11/19/2002US6484138 Method and apparatus for performing speech frame encoding mode selection in a variable rate encoding system
11/19/2002US6484137 Audio reproducing apparatus
11/19/2002US6483428 Removable front panel for an entertainment device
11/19/2002CA2233896C Signal coding system
11/14/2002WO2002091707A1 Real-time control of playback rates in presentations
11/14/2002WO2002091588A1 Sub-band adaptive differential pulse code modulation/encoding apparatus, sub-band adaptive differential pulse code modulation/encoding method, wireless transmission system, sub-band adaptive differential pulse code modulation/decoding apparatus, sub-band adaptive differential pulse code modulation/decoding method, and wirel
11/14/2002WO2002091388A1 Method and system for verifying derivative digital files automatically
11/14/2002WO2002091376A1 Generation and detection of a watermark robust against resampling of an audio signal
11/14/2002WO2002091363A1 Audio coding
11/14/2002WO2002091362A1 Method for extracting audio signal parameters and a coder using said method
11/14/2002WO2002091361A1 Adding data to a compressed data frame
11/14/2002WO2002065458A3 Method and apparatus for interoperability between voice transmission systems during speech inactivity
11/14/2002WO2002060070A3 System and method for error concealment in transmission of digital audio
11/14/2002WO2001048735A3 Inband signalling within speech segments
11/14/2002WO2001024165A9 Method and apparatus for voice latency reduction in a voice-over-data wireless communication system
11/14/2002US20020169978 Computer and driving method therefor
11/14/2002US20020169859 Voice decode apparatus with packet error resistance, voice encoding decode apparatus and method thereof
11/14/2002US20020169722 Information processing apparatus, information processing method, program recording medium, and data recording medium
11/14/2002US20020169601 Encoding device, decoding device, and broadcast system
11/14/2002US20020169599 Digital audio compression and expansion circuit
11/14/2002US20020168089 Method and apparatus for providing authentication of a rendered realization
11/14/2002US20020168000 Equalizer apparatus and equalizing method
11/14/2002US20020167937 Embedding sample voice files in voice over IP (VOIP) gateways for voice quality measurements
11/13/2002EP1256111A1 Rate determination coding
11/13/2002EP1256041A2 Circuits, systems and methods for information privatization in personal electronic appliances
11/13/2002EP1021807B1 Apparatus and method for simplified analog signal record and playback
11/13/2002EP0799554B1 System for tdma mobile-to-mobile vselp codec bypass
11/13/2002CN1379952A Coding of digital information
11/13/2002CN1379951A 数字计算机系统 Digital computer system
11/13/2002CN1379937A Method and system for robust frame type protection in system employing variable bit rates
11/13/2002CN1379899A Speech variable bit-rate celp coding method and equipment
11/13/2002CN1379555A Speech sound transmitting device
11/12/2002US6480829 Constant bitrate real-time lossless audio decoding method restoring moved excess coded data amounts
11/12/2002US6480827 Method and apparatus for voice communication
11/12/2002US6480822 Low complexity random codebook structure
11/12/2002US6480610 Subband acoustic feedback cancellation in hearing aids
11/12/2002US6480234 Method and apparatus for synchronously encoding audio signals with corresponding video frames
11/12/2002US6480123 Encoding apparatus and method, recording medium, and decoding apparatus and method
11/12/2002CA2118915C Process for reducing frequency interlacing during acoustic or optical signal transmission and/or recording
11/12/2002CA2104701C Computer-based multifunction personal communications system
11/07/2002WO2002089136A1 Method of recording on recording medium and recording device, and method of reproducing from recording mediumand reproducing device
11/07/2002WO2002089116A1 Inverse filtering method, synthesis filtering method, inverse filter device, synthesis filter device and devices comprising such filter devices
11/07/2002WO2002088880A2 Location-based services
11/07/2002WO2002065459A3 Method and apparatus for reducing undesired packet generation
11/07/2002WO2002059772A3 Blind decomposition using fourier and wavelet transforms
11/07/2002WO2002054380A3 Injection high frequency noise into pulse excitation for low bit rate celp
11/07/2002WO2001059757A3 Method and apparatus for compression of speech encoded parameters
11/07/2002US20020165825 Recording medium, license management apparatus, and recording and playback apparatus
11/07/2002US20020165721 Real-time control of playback rates in presentations
11/07/2002US20020165720 Methods and system for encoding and decoding a media sequence
11/07/2002US20020165710 Method in the decompression of an audio signal
11/07/2002US20020165709 Methods and apparatus for efficient vocoder implementations
11/07/2002US20020165681 Noise signal analyzer, noise signal synthesizer, noise signal analyzing method, and noise signal synthesizing method
11/07/2002US20020165631 Audio signal processing with adaptive noise-shaping modulation
11/07/2002US20020164050 Audio appliance and monitoring device responsive to watermark data
11/07/2002US20020163455 Audio signal compression
11/07/2002US20020162445 Method and apparatus for storing a multipart audio performance with interactive playback
11/07/2002DE10119980C1 Audio data coding method uses maximum permissible error level for each frequency band and signal power of audio data for determining quantisation resolution
11/07/2002CA2414221A1 Method of recording on recording medium and recording device, and method of reproducing from recording medium and reproducing device
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