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)
12/2003
12/10/2003CN1461558A Information processor
12/10/2003CN1461469A ADPCM speech coding system with phase-smearing and phase-desmearing filters
12/10/2003CN1461468A Apparatus for coding and decoding
12/10/2003CN1461467A Audio coding
12/10/2003CN1461466A Compression method and apparatus, decompression method and apparatus, compression/decompression system, peak detection method, program and recording medium
12/10/2003CN1460992A Low-time-delay adaptive multi-resolution filter group for perception voice coding/decoding
12/10/2003CN1130938C Efficient in-band signaling for discontinuous transmission and configuration changes in adaptive multi-rate communications systems
12/10/2003CN1130833C Information encoding/decoding method and device, information transmission method
12/10/2003CN1130691C Sound frequency decoding device
12/09/2003US6662248 Recording/reproducing apparatus using an IC memory
12/09/2003US6662155 Method and system for comfort noise generation in speech communication
12/09/2003US6662154 Method and system for information signal coding using combinatorial and huffman codes
12/09/2003US6662153 Speech coding system and method using time-separated coding algorithm
12/09/2003US6661923 Coding device, coding method, decoding device, decoding method, program recording medium and data recording medium
12/09/2003US6661762 Method and device for interfacing variable-rate sampled digital audio information to a string of uniform-sized blocks, and a unitary medium so produced by a write-interfacing
12/09/2003US6661357 System for sampling rate conversion in digital audio applications
12/09/2003CA2123002C Network echo canceller
12/04/2003WO2003100748A1 Talking e-book
12/04/2003WO2003085914A3 Billing system for services provided via instant communications
12/04/2003WO2003069873A3 Audio enhancement communication techniques
12/04/2003WO2003009469A3 Filter circuit and method for processing an audio signal
12/04/2003US20030225583 Frequency compander for a telephone line
12/04/2003US20030225576 Modification of fixed codebook search in G.729 Annex E audio coding
12/04/2003US20030225574 Encoding and transmission method and apparatus for enabling voiceband data signals to be transmitted transparently in high-efficiency encoded voice transmission system
12/04/2003US20030225573 Apparatus and method to compensate for unsynchronized transmission of synchrous data by counting low energy samples
12/04/2003US20030225468 Digital signal processing apparatus and digital signal processing method
12/04/2003US20030223599 Audio signal processing apparatus and audio signal processing method
12/04/2003US20030223491 Method and apparatus for adaptive signal compression
12/04/2003US20030223461 Computer implemented communication apparatus and method
12/04/2003US20030223443 Apparatus and method to compensate for unsynchronized transmission of synchrous data using a sorted list
12/04/2003US20030223407 Computer implemented voice over data communication apparatus and method
12/03/2003EP1367846A1 PCS pocket phone/microcell communication over-air protocol
12/03/2003EP1367565A1 Sound encoding apparatus and method, and sound decoding apparatus and method
12/03/2003EP1367564A1 Audio data interpolation apparatus and method, audio data-related information creation apparatus and method, audio data interpolation information transmission apparatus and method, program and recording medium thereof
12/03/2003EP1366626A2 Video and audio transcoder
12/03/2003EP1228505B1 Non-intrusive speech-quality assessment
12/03/2003EP1173925B1 Matrixing for lossless encoding and decoding of multichannels audio signals
12/03/2003CN1460323A Sub-and exponential smoothing noise canceling system
12/03/2003CN1460249A Time-scale modification of signals applying techniques specific to determined signal types
12/03/2003CN1460247A ADPCM speech coding system with specific step-size adaptation
12/03/2003CN1130023C Audio codec with AGC controlled by vocoder circuit and method for controlling gain of eudio-band processor
12/02/2003US6658496 Recording/reproducing apparatus
12/02/2003US6658383 Method for coding speech and music signals
12/02/2003US6658382 Audio signal coding and decoding methods and apparatus and recording media with programs therefor
12/02/2003US6658381 Methods and systems for robust frame type detection in systems employing variable bit rates
12/02/2003US6658378 Decoding method and apparatus and program furnishing medium
12/02/2003US6658112 Voice decoder and method for detecting channel errors using spectral energy evolution
12/02/2003US6658064 Method for transmitting background noise information in data transmission in data frames
11/2003
11/27/2003WO2003098860A1 Audio data code conversion transmission method and code conversion reception method, device, system, and program
11/27/2003WO2003098603A1 Method and device for code conversion between audio encoding/decoding methods and storage medium thereof
11/27/2003WO2003098602A1 Acoustic signal encoding method and encoding device, acoustic signal decoding method and decoding device, program, and recording medium image display device
11/27/2003WO2003098598A1 Transcoding of speech in a packet network environment
11/27/2003WO2003098593A1 Musical performance information compression device, musical performance information decompression device, musical performance information compression program product, and musical performance information decompression program product
11/27/2003WO2003045066A3 Producing acoustic signals from a video data flow
11/27/2003US20030220801 Audio compression method and apparatus
11/27/2003US20030220800 Coding multichannel audio signals
11/27/2003US20030220787 Method of and apparatus for pitch period estimation
11/27/2003US20030220783 Efficiency improvements in scalable audio coding
11/27/2003US20030219706 Talking E-book
11/27/2003US20030219144 Digital watermarks
11/27/2003US20030219130 Coherence-based audio coding and synthesis
11/27/2003US20030219087 Apparatus and method for time-alignment of two signals
11/27/2003US20030219036 Coding a masked data channel in a radio signal
11/27/2003US20030219009 Method and system for tunneling wideband telephony through the PSTN
11/27/2003CA2483406A1 Code conversion transmission and code conversion reception of audio data
11/26/2003EP1365568A1 Method and system for tunneling wideband audio through the PSTN
11/26/2003EP1365410A1 Compressed audio data editing method and apparatus
11/26/2003EP1364365A2 Acoustic communication system
11/26/2003EP1364364A2 Apparatus for coding scaling factors in an audio coder
11/26/2003CN1459093A 数据处理装置 Data processing means
11/26/2003CN1459092A Device to encode, decode and broadcast system
11/26/2003CN1458646A Filter parameter vector quantization and audio coding method via predicting combined quantization model
11/26/2003CN1129342C Subsriber handoff between multiple access communications system
11/26/2003CN1129325C Method for processing error in digital audio data and management data and device for acquiring audio information
11/26/2003CN1129263C Method and apparatus for group encoding signals
11/26/2003CN1129114C Additional information embedding method and its device, and additional information decoding method and its decoding device
11/25/2003US6654887 Steganography decoding methods employing error information
11/25/2003US6654723 Transmission system with improved encoder and decoder that prevents multiple representations of signal components from occurring
11/25/2003US6654718 Speech encoding method and apparatus, input signal discriminating method, speech decoding method and apparatus and program furnishing medium
11/25/2003US6654716 Perceptually improved enhancement of encoded acoustic signals
11/25/2003US6654480 Audio appliance and monitoring device responsive to watermark data
11/25/2003US6654317 Method and apparatus for reproducing information
11/20/2003WO2003096639A1 Method, system and apparatuses for transferring audio and/or video signals between synchronous and asynchronous networks and for minimizing delay time in such networks
11/20/2003WO2003096638A2 Packet transmission system for streamed data with paralell clock transmission line
11/20/2003WO2003096545A1 Encoding method and device, and decoding method and device
11/20/2003WO2003096534A1 Tone quality adjustment device designing method and designing device, tone quality adjustment device designing program, and tone quality adjustment device
11/20/2003WO2003096337A2 Watermark embedding and retrieval
11/20/2003WO2003096326A2 Audio compression
11/20/2003WO2003096325A1 Coding method, coding device, decoding method, and decoding device
11/20/2003WO2002095734A3 Method for controlling the amplification factor of a predictive voice encoder
11/20/2003WO2002045319A3 Low power digital audio decoding/playing system for computing devices
11/20/2003US20030216925 Compression method and apparatus, decompression method and apparatus, compression/decompression system, peak detection method, program, and recording medium
11/20/2003US20030216924 Compressed audio data editing method and apparatus
11/20/2003US20030216824 Method and apparatus for self-degrading digital data
11/20/2003US20030215112 Secure document design carrying auxiliary machine readable information
11/20/2003US20030215085 Telecommunication terminal able to modify the voice transmitted during a telephone call
11/20/2003US20030215013 Audio encoder with adaptive short window grouping
11/19/2003EP1363454A1 Information processor
11/19/2003EP1363283A2 Data compression/expansion on a plurality of digital information signals
11/19/2003EP1363274A1 Voice code sequence converting device and method
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