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)
03/1987
03/03/1987CA1218745A1 Speech signal processing system
01/1987
01/13/1987US4636876 Audio digital recording and playback system
12/1986
12/30/1986US4633500 Speech synthesizer
12/23/1986US4631748 Electronic handheld translator having miniature electronic speech synthesis chip
12/16/1986US4630304 Automatic background noise estimator for a noise suppression system
12/16/1986US4630222 One chip integrated circuit for electronic apparatus with means for generating sound messages
12/10/1986EP0203940A1 Relp vocoder implemented in digital signal processors
12/02/1986US4627001 System for processing information
11/1986
11/25/1986US4625286 Time encoding of LPC roots
11/21/1986EP0152430A4 Apparatus and methods for coding, decoding, analyzing and synthesizing a signal.
11/05/1986EP0200239A2 Digital polyphase filter bank with maximum sampling-rate reduction
10/1986
10/21/1986US4618982 Digital speech processing system having reduced encoding bit requirements
10/21/1986US4618936 Synthetic speech speed control in an electronic cash register
10/21/1986CA1213059A1 Multi-pulse excited linear predictive speech coder
10/14/1986US4617676 Predictive communication system filtering arrangement
09/1986
09/30/1986US4614415 Illumination signal processing system
09/25/1986WO1986005619A1 Analyzer for speech in noise prone environments
09/25/1986WO1986005617A1 Processing of acoustic waveforms
09/24/1986EP0195487A1 Multi-pulse excitation linear-predictive speech coder
09/24/1986EP0195441A1 Method for low bite rate speech coding using a multipulse excitation signal
09/23/1986CA1211843A1 Digital voice compression having a digitally controlled agc circuit and means for including the true gain in the compressed data
09/16/1986US4612414 Secure voice transmission
09/09/1986US4611342 Digital voice compression having a digitally controlled AGC circuit and means for including the true gain in the compressed data
09/02/1986US4610022 Voice encoding and decoding device
08/1986
08/20/1986EP0075311B1 Arrangement for speech transmission based on the channel vocoder principle
07/1986
07/23/1986EP0188283A2 Recording/reproducing apparatus including synthesized voice converter
07/23/1986EP0049271B1 Predictive signals coding with partitioned quantization
07/15/1986CA1207906A1 Speech-adaptive predictive coding system having reflected binary encoder/decoder
07/09/1986EP0186763A1 Method of and device for speech signal coding and decoding by vector quantization techniques
07/08/1986US4599580 Circuit for comparing two or more frequencies
07/03/1986WO1986003873A1 Method and apparatus for encoding speech
06/1986
06/17/1986CA1206280A1 Multirate digital transmission method and device for implementing said method
06/11/1986EP0096712B1 A system and method for recognizing speech
05/1986
05/13/1986US4589131 Voiced/unvoiced decision using sequential decisions
05/13/1986US4589130 Multirate digital transmission method and device for implementing said method
05/09/1986WO1986002726A1 Relp vocoder implemented in digital signal processors
05/07/1986EP0180202A2 Method of and device for correcting burst errors on low bit-rate coded speech signals transmitted on radio-communication channels
05/07/1986EP0069673B1 Spectrum analyzer comprising filters which are common to two channels, especially for speech recognition
04/1986
04/29/1986CA1203907A1 Speech synthesizer
04/29/1986CA1203906A1 Variable frame length vocoder
04/22/1986USRE32124 Predictive signal coding with partitioned quantization
04/08/1986US4581715 Fourier transform processor
04/02/1986EP0175752A1 Multipulse lpc speech processing arrangement.
03/1986
03/25/1986CA1202419A1 Speech encoder
03/13/1986WO1986001665A1 Predictive communication system filtering arrangement
03/04/1986US4574392 Arrangement for the transmission of speech according to the channel vocoder principle
03/04/1986CA1201533A1 Speech pattern processing utilizing speech pattern compression
02/1986
02/05/1986EP0170087A2 Method and apparatus for analyzing and synthesizing human speech
02/04/1986US4569075 Method of coding voice signals and device using said method
01/1986
01/08/1986EP0167364A1 Speech-silence detection with subband coding
01/07/1986US4563770 Measuring device and method
01/07/1986CA1199120A1 Apparatus for processing document data including voice data
01/02/1986EP0166592A2 Encoding method
12/1985
12/27/1985EP0058997B1 Digital processing circuit having a multiplication function
12/24/1985US4561102 Pitch detector for speech analysis
12/11/1985EP0163829A1 Speech signal processing system
12/03/1985CA1197619A1 Voice encoding systems
11/1985
11/27/1985EP0162585A1 Encoder capable of removing interaction between adjacent frames
11/26/1985CA1197319A1 Editing voice data
11/21/1985EP0085820B1 Method for multi-speed digital transmission and apparatus for carrying out said method
11/12/1985US4553221 Digital filtering system
11/12/1985US4553213 Communication system
11/07/1985EP0138954A4 Speech pattern processing utilizing speech pattern compression.
11/05/1985US4551816 Filter display system
10/1985
10/29/1985US4550425 Speech sampling and companding device
10/16/1985EP0158270A2 Broadcasting system for storing and withdrawal at a later date of speech information
10/08/1985US4546446 Digital processing circuit having a multiplication function
10/01/1985US4544919 Method of processing a digitized electrical signal
09/1985
09/26/1985WO1985004276A1 Multipulse lpc speech processing arrangement
09/11/1985EP0154381A2 Digital speech coder with baseband residual coding
09/10/1985US4541111 LSP Voice synthesizer
08/1985
08/28/1985EP0152430A1 Apparatus and methods for coding, decoding, analyzing and synthesizing a signal.
08/27/1985US4538234 Adaptive predictive processing system
08/20/1985US4536886 LPC pole encoding using reduced spectral shaping polynomial
07/1985
07/31/1985EP0149724A1 Method and apparatus for coding digital signals
07/30/1985US4532495 Speech digitization system
07/23/1985US4531182 Machine control system operating from remote commands
07/09/1985CA1190323A1 Adaptive predictive processing system
07/03/1985EP0045813B1 Speech synthesis unit
06/1985
06/26/1985EP0146434A1 A speaker independent speech recognition process
06/19/1985EP0144724A1 Speech synthesizing apparatus
06/11/1985US4523290 Data processor architecture
06/10/1985EP0135512A4 Improved method and means of determining coefficients for linear predictive coding.
06/05/1985EP0143584A2 Sub-band coders, decoders and filters
06/04/1985US4521907 For minimizing error components in the analog output signal
06/04/1985CA1188424A1 Multiplier/adder circuit
05/1985
05/28/1985US4520502 Speech synthesizer
05/28/1985US4520499 Combination speech synthesis and recognition apparatus
05/28/1985CA1187994A1 Lpc word recognizer utilizing energy features
05/22/1985EP0142171A2 Frequency comparing circuit
05/21/1985US4519094 LPC Word recognizer utilizing energy features
05/15/1985EP0141497A1 Voice recognition
05/15/1985EP0140957A1 Audio digital recording and playback system.
05/08/1985EP0139803A1 Method of recovering lost information in a digital speech transmission system, and transmission system using said method
05/07/1985US4516259 Speech analysis-synthesis system
05/02/1985EP0138954A1 Speech pattern processing utilizing speech pattern compression.
04/1985
04/24/1985EP0138073A1 Data converter for interfacing LPC and channel vocoders for the transmission of digital speech signals with narrow-band transmission systems
04/24/1985EP0138063A2 Method for parameter extraction in automatic speech recognition and in speech coding
04/24/1985EP0138061A1 Method of determining speech spectra with an application to automatic speech recognition and speech coding
04/17/1985EP0137532A2 Multi-pulse excited linear predictive speech coder
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