| Patents for G10L 21 - Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility (18,985) |
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| 10/09/2001 | US6301555 Adjustable psycho-acoustic parameters |
| 10/09/2001 | US6300553 Pitch shifter |
| 10/04/2001 | WO2001073761A1 Relative noise ratio weighting techniques for adaptive noise cancellation |
| 10/04/2001 | WO2001073760A1 Communication system noise cancellation power signal calculation techniques |
| 10/04/2001 | WO2001073759A1 Perceptual spectral weighting of frequency bands for adaptive noise cancellation |
| 10/04/2001 | WO2001073758A1 Spectrally interdependent gain adjustment techniques |
| 10/04/2001 | WO2001073751A1 Speech presence measurement detection techniques |
| 10/04/2001 | US20010027399 Method and apparatus for reproducing audio information |
| 10/04/2001 | US20010027398 Communication system for communicating voice and image data, information processing apparatus and method, and storage medium |
| 10/04/2001 | US20010027395 Read-aloud device |
| 10/04/2001 | US20010027391 Excitation vector generator, speech coder and speech decoder |
| 10/04/2001 | EP1139337A1 A method of transmitting voice information and an electronic communications device for transmission of voice information |
| 10/04/2001 | EP1138116A1 High volume expander circuit |
| 10/04/2001 | CA2404030A1 Relative noise ratio weighting techniques for adaptive noise cancellation |
| 10/04/2001 | CA2404027A1 Communication system noise cancellation power signal calculation techniques |
| 10/04/2001 | CA2404024A1 Spectrally interdependent gain adjustment techniques |
| 10/04/2001 | CA2403945A1 Speech presence measurement detection techniques |
| 10/04/2001 | CA2401672A1 Perceptual spectral weighting of frequency bands for adaptive noise cancellation |
| 10/03/2001 | CN1315801A Method and apparatus for testing calling overlapping by self-adaptive decision threshold |
| 10/02/2001 | US6297695 High volume expander circuit |
| 10/02/2001 | CA2250462C Automated synchronization of video image sequences to new soundtracks |
| 09/27/2001 | US20010025302 Data processing system, device, and method, and program storage medium |
| 09/27/2001 | US20010025242 Error concealment method with pitch change detection |
| 09/27/2001 | US20010025240 Speech recognition device with reference transformation means |
| 09/26/2001 | EP1136986A2 Audio datastream transcoding apparatus |
| 09/26/2001 | EP1136985A2 Vector quantisation codebook generation method |
| 09/26/2001 | EP1136981A1 Method of sampling pitch period of voice signal and device for time-axis compression/decompression of voice signal |
| 09/26/2001 | CN2450746Y Voice prompting device of power control switch |
| 09/25/2001 | US6295391 Automatic data routing via voice command annotation |
| 09/25/2001 | US6295364 Simplified communication system |
| 09/25/2001 | US6295014 System for processing one-bit audio signals |
| 09/20/2001 | WO2001069371A2 Computer appliance comprising a multiway acoustic output and input system |
| 09/20/2001 | WO2000048171A9 Speech enhancement with gain limitations based on speech activity |
| 09/20/2001 | US20010023399 Audio signal processing apparatus and signal processing method of the same |
| 09/20/2001 | US20010023395 Speech encoder adaptively applying pitch preprocessing with warping of target signal |
| 09/19/2001 | EP1134728A1 Regeneration of the low frequency component of a speech signal from the narrow band signal |
| 09/19/2001 | EP1133899A1 Binaural signal processing techniques |
| 09/19/2001 | EP1133768A1 Speech recognition apparatus and consumer electronics system |
| 09/19/2001 | EP0764938B1 Perceptual noise masking based on synthesis filter frequency response |
| 09/19/2001 | CN1314025A Methods for adjusting audio signals responsive to changes ina power supply level and related communications devices |
| 09/19/2001 | CN1313984A Method and apparatus for separation of impulsive and non-impulsive components in a signal |
| 09/19/2001 | CN1313983A Noise signal encoder and voice signal encoder |
| 09/19/2001 | CN1313718A Device for shaping signal, especially speech signal |
| 09/13/2001 | WO2001067438A1 Slowed-down voice reproducing method |
| 09/13/2001 | US20010021908 System for adjusting psycho-acoustic parameters in a digital audio codec |
| 09/12/2001 | EP1132896A1 Frequency filtering method using a Wiener filter applied to noise reduction of acoustic signals |
| 09/12/2001 | EP1132890A1 Information retrieving/processing method, retrieving/processing device, storing method and storing device |
| 09/12/2001 | EP1131892A1 Signal processing apparatus and method |
| 09/12/2001 | EP1131815A1 Processing circuit for correcting audio signals, receiver, communication system, mobile apparatus and related method |
| 09/12/2001 | EP1010168B1 Accelerated convolution noise elimination |
| 09/12/2001 | CN2447895Y Double-module multi-purpose radio data and speech transreceiver |
| 09/12/2001 | CN2447894Y Sound control identificating device |
| 09/12/2001 | CN1312977A Scalable audio coder and decoder |
| 09/12/2001 | CN1312976A System and method of masking quantization noise of audio signals |
| 09/12/2001 | CN1312974A System and method for entropy ercoding quantized transform coefficients of a sigral |
| 09/12/2001 | CN1312938A System and method for reducing noise |
| 09/11/2001 | US6289311 Sound synthesizing method and apparatus, and sound band expanding method and apparatus |
| 09/11/2001 | US6289310 Apparatus for enhancing phoneme differences according to acoustic processing profile for language learning impaired subject |
| 09/11/2001 | US6289309 Noise spectrum tracking for speech enhancement |
| 09/06/2001 | DE10010037A1 Verfahren zur Rekonstruktion tieffrequenter Sprachanteile aus mittelhohen Frequenzanteilen Method for reconstructing low-frequency speech components from medium-high frequency components |
| 09/05/2001 | EP1130831A1 Method for distinguishing signals from one another, and filter |
| 09/05/2001 | EP1130577A2 Method for the reconstruction of low speech frequencies from mid-range frequencies |
| 09/05/2001 | EP1129537A1 Processing received data in a distributed speech recognition process |
| 09/05/2001 | EP1129361A1 A method and system for updating noise estimates during pauses in an information signal |
| 09/05/2001 | EP1128767A1 System and method for processing low signal-to-noise ratio signals |
| 09/05/2001 | CN2446635Y Voice miniature remote controlled radio recorder |
| 09/05/2001 | CN1311891A Signal noise reduction by spectral substration using linear convolution and causal filtering |
| 09/04/2001 | US6285862 RDS-TMC radio receiver including a speech segment memory |
| 09/04/2001 | US6285768 Noise cancelling method and noise cancelling unit |
| 09/04/2001 | CA2151625C Effect adding system |
| 08/30/2001 | WO2001063597A1 Speech recognition device with reference transformation means |
| 08/30/2001 | US20010018657 Digital signal processor |
| 08/30/2001 | US20010018651 Coded voice signal format converting apparatus |
| 08/29/2001 | EP0807307B1 A pitch post-filter |
| 08/29/2001 | EP0707763B1 Reduction of background noise for speech enhancement |
| 08/29/2001 | CN2445403Y Cigarette case with advertisement voice |
| 08/29/2001 | CN2444930Y Bottle opener with advetisment sound |
| 08/29/2001 | CN1310840A Signal noise reduction by spectral subtraction using spectrum dependent exponential gain function averaging |
| 08/29/2001 | CN1310839A Interval normalization device for voice recognition input voice |
| 08/29/2001 | CN1310439A Speech speed regulating method in fixed frequency |
| 08/28/2001 | US6281424 Information processing apparatus and method for reproducing an output audio signal from midi music playing information and audio information |
| 08/23/2001 | WO2001061687A1 Wideband speech codec using different sampling rates |
| 08/23/2001 | US20010016818 Tactile and visual hearing aids utilizing sonogram pattern |
| 08/22/2001 | EP1126687A2 Method for coordinated echo and/or noise reduction |
| 08/22/2001 | EP1126620A1 Method and apparatus for expanding band of audio signal |
| 08/22/2001 | EP1126458A1 Method for adjustment of volume control of a digital sound recording |
| 08/22/2001 | EP1126439A2 Mobile to mobile digital wireless connection having enhanced voice quality |
| 08/22/2001 | EP1126437A2 Variable rate vocoder |
| 08/22/2001 | EP1125405A1 Signal separation method and device for non-linear mixing of unknown signals |
| 08/22/2001 | EP1125287A1 Method and apparatus to prepare listener-interest-filtered works |
| 08/22/2001 | EP1125275A1 Background energy estimation |
| 08/22/2001 | CN2443892Y Voice burglar-proof device for integrated motor cycle |
| 08/22/2001 | CN1309521A Digital wireless connection of mobile station to mobile station with enhanced voice quality |
| 08/21/2001 | US6278387 Audio encoder and decoder utilizing time scaling for variable playback |
| 08/16/2001 | WO2001059766A1 Background noise reduction in sinusoidal based speech coding systems |
| 08/16/2001 | WO2001059764A1 Error correction method with pitch change detection |
| 08/16/2001 | WO2001059758A1 Electrolaryngeal speech enhancement for telephony |
| 08/16/2001 | US20010013270 Pitch shifter |
| 08/16/2001 | CA2337176A1 Process for adjusting the sound level of a digital sound recording |
| 08/15/2001 | CN2443467Y Intelligent speech prompting apparatus |