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)
05/1983
05/17/1983CA1146638A1 Digital filter
05/03/1983US4382160 Methods and apparatus for encoding and constructing signals
04/1983
04/27/1983EP0077558A1 Method and apparatus for speech recognition and reproduction
04/12/1983US4379949 Method of and means for variable-rate coding of LPC parameters
04/12/1983CA1144650A1 Predictive signal coding with partitioned quantization
04/06/1983EP0076234A1 Method and apparatus for reduced redundancy digital speech processing
04/06/1983EP0076233A1 Method and apparatus for redundancy-reducing digital speech processing
04/05/1983CA1144282A1 Processor controlled sound synthesizer
03/1983
03/30/1983EP0075311A2 Arrangement for speech transmission based on the channel vocoder principle
03/15/1983CA1142859A1 Sound reproduction in a space with an independent sound source
02/1983
02/16/1983EP0071716A2 Allophone vocoder
02/15/1983US4374304 Spectrum division/multiplication communication arrangement for speech signals
02/09/1983EP0070949A1 Transmission method for voice and digital data and arrangement for carrying out said method
02/09/1983EP0070948A1 Voice coding method and arrangment for carrying out said method
02/08/1983US4373191 Absolute magnitude difference function generator for an LPC system
02/01/1983US4371953 Analog read only memory
02/01/1983US4371923 Computer system architecture
01/1983
01/25/1983US4370720 Coordinate rotation for numerical control system
01/12/1983EP0069673A1 Spectrum analyzer comprising filters which are common to two channels, especially for speech recognition
01/12/1983EP0069209A2 Speech analysis circuits using an inverse lattice network
12/1982
12/28/1982CA1138580A1 Digital intercept recorder/announcer system
12/14/1982US4364110 Computerized machine control system
11/1982
11/23/1982US4360708 Speech processor having speech analyzer and synthesizer
11/17/1982EP0004759B1 Methods and apparatus for encoding and constructing signals
11/09/1982US4358733 Spectrum analyzer without distinct band-pass filter components
10/1982
10/19/1982US4355204 Speech synthesizing arrangement having at least two distortion circuits
10/12/1982US4354057 Predictive signal coding with partitioned quantization
09/1982
09/28/1982US4352182 Method of and device for testing the quality of digital speech-transmission equipment
09/28/1982US4352162 Digital filter
09/21/1982US4350860 Heating apparatus with sensor
09/14/1982US4349699 Speech synthesizer
09/07/1982US4348653 Method and system for indicating automobile abnormal conditions
09/01/1982EP0058997A1 Digital processing circuit having a multiplication function
08/1982
08/31/1982CA1130920A1 Speech detector with variable threshold
08/24/1982US4346262 Speech analysis system
08/10/1982US4344148 System using digital filter for waveform or speech synthesis
08/03/1982US4342906 Pulse width modulated feedback arrangement for illumination control
07/1982
07/20/1982US4340781 Speech analysing device
07/13/1982CA1127763A1 Multi-channel digital speech synthesizer
07/06/1982CA1127310A1 Quantizing process with dynamic allocation of the available bit resources and device for implementing said process
06/1982
06/15/1982US4335275 Synchronous method and apparatus for speech synthesis circuit
05/1982
05/25/1982US4331836 Speech synthesis integrated circuit device
05/18/1982US4330689 Multirate digital voice communication processor
05/18/1982CA1123955A1 Speech analysis and synthesis apparatus
05/12/1982EP0051462A2 Speech processor
05/11/1982CA1123514A1 Speech analysis and synthesis apparatus
05/04/1982US4328579 Voice band multiplex transmission system
05/04/1982US4328395 Speech synthesis system with variable interpolation capability
04/1982
04/07/1982EP0048835A2 Electronic teaching apparatus
03/1982
03/30/1982US4322819 Memory system having servo compensation
03/30/1982US4322579 Sound reproduction in a space with an independent sound source
03/09/1982US4319085 Speech recognition apparatus and method
03/09/1982US4319084 Multichannel digital speech synthesizer
03/09/1982CA1119724A1 Predictive speech signal coding with reduced noise effects
02/1982
02/23/1982CA1118897A1 Sound synthesizing apparatus
02/17/1982EP0045813A1 Speech synthesis unit
02/09/1982CA1118104A1 Lattice filter for waveform or speech synthesis circuits using digital logic
02/02/1982US4314105 Delta modulation method and system for signal compression
01/1982
01/12/1982US4310878 Digital feedback control system
12/1981
12/30/1981EP0042488A2 Electronic arithmetic learning aid
12/08/1981US4304965 Data converter for a speech synthesizer
12/08/1981US4304964 Variable frame length data converter for a speech synthesis circuit
11/1981
11/17/1981US4301329 Speech analysis and synthesis apparatus
10/1981
10/20/1981US4296279 Speech synthesizer
10/15/1981WO1981002942A1 Predictive signals coding with partitioned quantization
10/14/1981EP0037552A1 Signal synthesizer apparatus
10/14/1981EP0037493A1 Voice analyzing apparatus
09/1981
09/30/1981EP0036755A1 Methods and apparatuses for indicating automobile abnormal conditions
09/30/1981EP0036559A1 Electronic reading learning aid
09/03/1981WO1981002489A1 Speech synthesis unit
09/01/1981US4287584 Speech-synthesizer timepiece
08/1981
08/18/1981US4284846 System and method for sound recognition
08/04/1981US4282404 Synthetic-speech calculators
07/1981
07/21/1981US4280192 Minimum space digital storage of analog information
07/21/1981CA1105621A1 Voice synthesizer
06/1981
06/30/1981US4276572 Automatic message announcement system
06/30/1981US4276444 Synthetic-speech calculators
06/24/1981EP0030724A2 Method and device for carrying out objective measurements on digital speech transmission systems
06/09/1981US4272649 Processor controlled sound synthesizer
06/02/1981US4271332 Speech signal A/D converter using an instantaneously-variable bandwidth filter
05/1981
05/26/1981CA1102000A1 Detection and monitoring device
05/20/1981EP0028856A2 Speech synthesizing arrangement having at least two distortion circuits
05/06/1981EP0028103A1 A spectrum analyzer
03/1981
03/25/1981EP0025513A1 Heating apparatus with sensor
03/10/1981US4255618 Digital intercept recorder/announcer system
11/1980
11/04/1980CA1089096A1 Signal synthesizer spectrum contour scaler
10/1980
10/28/1980US4230906 Speech digitizer
10/16/1980WO1980002211A1 Residual excited predictive speech coding system
10/15/1980EP0017341A1 A sound synthesizing circuit and method of synthesizing sounds
10/01/1980EP0016427A2 Multi-channel digital speech synthesizer
09/1980
09/17/1980EP0015363A1 Speech detector with a variable threshold level
09/02/1980US4220819 Residual excited predictive speech coding system
08/1980
08/26/1980US4219695 Noise estimation system for use in speech analysis
07/1980
07/22/1980US4214125 Method and apparatus for speech synthesizing
07/09/1980EP0012766A1 Predictive speech signal coding with reduced noise effects
07/08/1980US4211892 Synthetic-speech calculators
07/01/1980US4210781 Sound synthesizing apparatus
06/1980
06/24/1980US4209853 Holographic system for object location and identification
06/24/1980US4209852 Signal processing and memory arrangement
06/24/1980US4209844 Lattice filter for waveform or speech synthesis circuits using digital logic
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