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| Number | Title | Issue Date |
| 8160868 | Scalable decoder and scalable decoding method A scalable decoder capable of avoiding deterioration in subjective quality of a listener. The scalable decoder for decoding core layer encoding data and extension layer encoding data including an extension layer gain coefficient, wherein a voice analysis section det... | 04/17/2012 |
| 8126705 | System and method for automatically adjusting floor controls for a conversation A system and method for automatically adjusting floor controls for a conversation is provided. Audio streams are received, which each originate from an audio source. Floor controls for a current configuration including at least a portion of the audio streams are mai... | 02/28/2012 |
| 8099275 | Sound encoder and sound encoding method for generating a second layer decoded signal based on a degree of variation in a first layer decoded signal A sound encoder having an improved quantization performance while suppressing an increase of the bit rate to a lowest level. In a second layer encoder, a standard deviation calculator calculates a standard deviation σc of a first layer decoding spectrum after decod... | 01/17/2012 |
| 8086448 | Dynamic modification of a high-order perceptual attribute of an audio signal Processing an audio signal associated with a sound recording made available to be rendered to an end user is disclosed. The audio signal is received. A high-order perceptual attribute of the audio signal as rendered is changed by modifying the audio signal. The modi... | 12/27/2011 |
| 8010349 | Scalable encoder, scalable decoder, and scalable encoding method A scalable encoder enabling improvement of the encoding efficiency in the second layer and improvement of the quality of the original signal decoded using the encoding signal in the second layer. A predictive coefficient encoder of the scalable encoder has a predict... | 08/30/2011 |
| 7996213 | Method and apparatus for estimating degree of similarity between voices A similarity degree estimation method is performed by two processes. In a first process, an inter-band correlation matrix is created from spectral data of an input voice such that the spectral data are divided into a plurality of discrete bands which are separated f... | 08/09/2011 |
| 7974836 | System and method for voice user interface navigation A Voice User Interface (VUI) or Interactive Voice Response (IVR) system utilizes three levels of navigation (e.g. Main Menu, Services, and Helper Commands) in presenting information units arranged in sets. The units are “spoken” by a system in a group to a human... | 07/05/2011 |
| 7890320 | Tower of numeric types Various technologies and techniques are disclosed for providing a numeric tower that represents a structure supporting statically defined numeric data types. The numeric data types each are operable to implement a different but accurate representation of a particula... | 02/15/2011 |
| 7774199 | Signal processing using pilot based coding An apparatus for processing a signal and method thereof are disclosed. Data coding and entropy coding are performed with interconnection, and grouping is used to enhance coding efficiency. The present invention includes the steps of obtaining a difference value and ... | 08/10/2010 |
| 7756702 | Signal processing using pilot based coding An apparatus for processing a signal and method thereof are disclosed. Data coding and entropy coding are performed with interconnection, and grouping is used to enhance coding efficiency. The present invention includes the steps of obtaining a pilot reference value... | 07/13/2010 |
| 7756701 | Audio signal processing using pilot based coding An apparatus for processing a signal and method thereof are disclosed. Data coding and entropy coding are performed with interconnection, and grouping is used to enhance coding efficiency. The present invention includes the steps of obtaining a reference value corre... | 07/13/2010 |
| 7707029 | Training wideband acoustic models in the cepstral domain using mixed-bandwidth training data for speech recognition A method and apparatus are provided that use narrowband data and wideband data to train a wideband acoustic model. ... | 04/27/2010 |
| 7702503 | Voice model for speech processing based on ordered average ranks of spectral features Methods and arrangements for generating a voice model in speech processing. Upon accepting at least two input vectors with spectral features, vectors of ranks are created via ranking values of the spectral features of each input vector, ordered vectors are created v... | 04/20/2010 |
| 7664633 | Audio coding via creation of sinusoidal tracks and phase determination Coding of an audio signal represented by a respective set of sampled signal values for each of a plurality of sequential segments is disclosed. The sampled signal values are analyzed (40) to determine one or more sinusoidal components for each of the pluralit... | 02/16/2010 |
| 7617094 | Methods, apparatus, and products for identifying a conversation One aspect of the invention is a method of using a computer to identify a conversation. Another aspect is a method for an audio processing system that identifies conversations and enhances each conversation for each user in the conversation. ... | 11/10/2009 |
| 7610196 | Periodic signal enhancement system A signal enhancement system improves the understandability of speech or other audio signals. The system reinforces selected parts of the signal, may attenuate selected parts of the signal, and may increase SNR. The system includes delay logic, a partitioned adaptive... | 10/27/2009 |
| 7565284 | Acoustic models with structured hidden dynamics with integration over many possible hidden trajectories A method of producing at least one possible sequence of vocal tract resonance (VTR) for a fixed sequence of phonetic units, and producing the acoustic observation probability by integrating over such distributions is provided. The method includes identifying a seque... | 07/21/2009 |
| 7552048 | Method and device for performing frame erasure concealment on higher-band signal A method for performing a frame erasure concealment for a higher-band signal involves calculating a periodic intensity of the higher-band signal with respect to pitch period information of a lower-band signal; comparing the periodic intensity to a preconfigured thre... | 06/23/2009 |
| 7516064 | Adaptive hybrid transform for signal analysis and synthesis Analysis and synthesis filter banks such as those used in audio and video coding systems are each implemented by a hybrid transform that comprises a primary transform in cascade with one or more secondary transforms. The primary transforms for the filter banks imple... | 04/07/2009 |
| RE40691 | Encoding decoding and compression of audio-type data using reference coefficients located within a band of coefficients An audio type signal is encoded. The signal is first divided into bands. For each band, a yardstick signal element is selected. The yardstick may be the signal element having the largest magnitude in the band, the second largest, closest to the median magnitude, or ... | 03/31/2009 |
| 7499852 | Audio coding using a shape function Coding (1) of an audio signal is provided including estimating (110) a position of a transient signal component in the audio signal, matching (111,112) a shape function on the transient signal component in case the transient signal component is ... | 03/03/2009 |
| 7460990 | Efficient coding of digital media spectral data using wide-sense perceptual similarity Traditional audio encoders may conserve coding bit-rate by encoding fewer than all spectral coefficients, which can produce a blurry low-pass sound in the reconstruction. An audio encoder using wide-sense perceptual similarity improves the quality by encoding a perc... | 12/02/2008 |
| 7457743 | Method for improving the coding efficiency of an audio signal Coding an audio signal includes selecting a reference sequence that has the smallest error relative to a sequence of the audio signal, calculating pitch predictor coefficients for the selected reference sequence using one of a set of pitch predictor orders, producin... | 11/25/2008 |
| 7433815 | Method and apparatus for voice transcoding between variable rate coders A variable-rate voice transcoder that transcodes a bitstream representing frames of data encoded according to a first compression standard to a bitstream representing frames of data according to a second compression standard; the second compression standard defines ... | 10/07/2008 |
| 7424427 | Systems and methods for classifying audio into broad phoneme classes An audio classification system classifies sounds in an audio stream as belonging to one of a relatively small number of classes. The audio classification system includes a signal analysis component [301] and a decoder [302]. The decoder [302] in... | 09/09/2008 |
| 7412376 | System and method for real-time detection and preservation of speech onset in a signal A “speech onset detector” provides a variable length frame buffer in combination with either variable transmission rate or temporal speech compression for buffered signal frames. The variable length buffer buffers frames that are not clearly identified as either... | 08/12/2008 |
| 7412377 | Voice model for speech processing based on ordered average ranks of spectral features Methods and arrangements for generating a voice model in speech processing. Upon accepting at least two input vectors with spectral features, vectors of ranks are created via ranking values of the spectral features of each input vector, ordered vectors are created v... | 08/12/2008 |
| 7406356 | Method for characterizing the timbre of a sound signal in accordance with at least a descriptor The invention concerns a method for characterizing the timbre of a time-varying sound signal s(t) using at least one descriptor, where the at least one descriptor includes a harmonic spectral spread of the sound signal s(t). The sound signal s(t) may be compared to ... | 07/29/2008 |
| 7395211 | Modulating one or more parameters of an audio or video perceptual coding system in response to supplemental information A method of modifying the operation of the encoder function and/or the decoder function of a perceptual coding system in accordance with supplemental information, such as a watermark, so that the supplemental information may be detectable in the output of the decode... | 07/01/2008 |
| 7386444 | Hybrid speech coding and system Hybrid linear predictive speech coding system with phase alignment predictive quantization zero phase alignment of speech prior to waveform coding aligns synthesized speech frames of a waveform coder with frames synthesized with a parametric coder. Inter-frame inter... | 06/10/2008 |
| 7376563 | System for rehabilitation of a hearing disorder A system for rehabilitation of a hearing disorder which comprises at least one acoustic sensor for picking up an acoustic signal and converting it into an electrical audio signal, an electronic signal processing unit for audio signal processing and amplification, an... | 05/20/2008 |
| 7376559 | Pre-processing speech for speech recognition A method for pre-processing speech, in particular for recognizing speech, including receiving a speech signal, separating a spectrum of said speech signal into a number of predetermined frequency sub-bands, analyzing said speech signal within each of said frequency ... | 05/20/2008 |
| 7376554 | Excitation for higher band coding in a codec utilising band split coding methods Methods and arrangements are disclosed for digitally encoding and decoding sound—An input signal is split (811) into a primary frequency band and at least one secondary frequency band. The parts of the input signal in the frequency bands are separately enco... | 05/20/2008 |
| 7369995 | Method and apparatus for synthesizing speech from text A speech synthesis method, in which speech units are concatenated using a DB, wherein the speech units to be concatenated are determined and divided into a left speech unit and a right speech unit. The length of an interpolation region of each of the left and right ... | 05/06/2008 |
| 7366712 | Information retrieval center gateway A method, apparatus, and gateway allows a variety of client devices to access information from current information providers, and the information is adapted to accommodate the differing formats of the client devices. Speech processing, text-to-speech (TTS), speech f... | 04/29/2008 |
| 7366659 | Methods and devices for selectively generating time-scaled sound signals Time-scaled, sound signals (i.e. sounds output at differing speeds) are generated by mixing weighted time-and frequency-domain processed signals, the former signal generally representing speech-based signals while the latter representing music-based signals. The wei... | 04/29/2008 |
| 7363216 | Method and system for parametric characterization of transient audio signals A method of parametrically encoding a transient audio signal, including the steps of: determining a set V of the N largest frequency components of the transient audio signal, where N is a predetermined number; determining an approximate envelope of the transient aud... | 04/22/2008 |
| 7363226 | Psychosomatic diagnosis system A psychosomatic diagnosis system in which evaluation of the psychosomatic condition of a person to be diagnosed is performed automatically and objectively, based on the response by voice with respect to a question and the like asked to the person to be diagnosed. Th... | 04/22/2008 |
| 7359856 | Speech detection system in an audio signal in noisy surrounding A method of detecting speech in an audio signal comprises a step of obtaining information on the energy of the audio signal, the energy information then being used to detect speech in the audio signal. The method further comprises a step of obtaining information on ... | 04/15/2008 |
| 7349426 | Integrated, self-optimizing, multi-parameter/multi-variable point-to-multipoint communication system [II] An Integrated, Self-Optimizing, Multi-Parameter/Multi-Variable Point-to-Multipoint Communication System provides integrated adaptive and dynamic responsiveness for communication parameters related to multiple characteristics of wireless communication links for a sin... | 03/25/2008 |
