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| Number | Title | Issue Date |
| 8185386 | Method and apparatus for performing packet loss or frame erasure concealment A method for performing packet loss or Frame Erasure Concealment (FEC) for a speech coder receives encoded frames of compressed speech information transmitted from an encoder. The method determines whether an encoded frame has been lost, corrupted in transmission, o... | 05/22/2012 |
| 8145478 | Apparatus and method for widening audio signal band An audio signal band expanding apparatus (100a) includes a harmonic generator (3) that receives an input audio signal having a predetermined band and generates, based on the input audio signal, harmonic signals, and an adder (2) that adds... | 03/27/2012 |
| 8126708 | Systems, methods, and apparatus for dynamic normalization to reduce loss in precision for low-level signals A dynamic normalization factor for a current frame of a signal is determined to reduce loss in precision for low-level signals. The normalization factor depends on an amplitude of the current frame of the signal. The normalization factor also depends on values of fi... | 02/28/2012 |
| 8121834 | Method and device for modifying an audio signal A method of modifying acoustic characteristics of an original audio signal as a function of modification instructions relating at least to the fundamental frequency and the spectral envelope of the original signal. The method comprises a first modification operation... | 02/21/2012 |
| 8041561 | Multi-channel codebook dependent compensation Methods and apparatus, in the context of speech recognition, for compensating in the cepstral domain for the effect of an interfering signal by using a reference signal. ... | 10/18/2011 |
| 7765221 | Normalization of a multi-dimensional set object Methods and apparatus, including computer systems and program products, for normalizing computer-represented collections of objects. A first minimum value can be normalized based on a second minimum value of a universal set object that corresponds to the first set o... | 07/27/2010 |
| 7711556 | Pseudo-cepstral adaptive short-term post-filters for speech coders Methods and systems for filtering synthesized or reconstructed speech are implemented. A filter based on a set of linear predictive coding (LPC) coefficients is constructed by transforming the LPC coefficients to the pseudo-cepstrum, a domain existing between LPC do... | 05/04/2010 |
| 7643991 | Speech enhancement for electronic voiced messages The present invention provides for processing voice data. The vocalic of at least one word associated with the electronic voice signal is elongated. The magnitude of at least one consonant spike of the at least one word associated with the electronic voice signal is... | 01/05/2010 |
| 7593849 | Normalization of speech accent A normalizer (100, 300) of the accent of accented speech modifies (210, 410) the characteristics of input signals that represent the speech spoken in an individual voice with an accent to form output signals that represent the speech spoken in the same... | 09/22/2009 |
| 7469208 | Method and apparatus for automatically normalizing a perceived volume level in a digitally encoded file Automatically normalizing a perceived loudness for a digitally encoded audio track formed of a number of channels during playback on a multimedia asset player is described. A number of auditory selectivity frequency bands are selected and for each channel in the tra... | 12/23/2008 |
| 7467084 | Device and method for operating a voice-enhancement system A method and a device are for operating a voice-enhancement system, such as a communication and/or intercom/two-way intercom or duplex telephony device in a motor vehicle. The device includes at least one microphone and at least one loudspeaker for reproducing a sig... | 12/16/2008 |
| 7454330 | Method and apparatus for speech encoding and decoding by sinusoidal analysis and waveform encoding with phase reproducibility A speech encoding method and apparatus in which an input speech signal is divided in terms of blocks or frames as encoding units and encoded in terms of the encoding units, whereby explosive and fricative consonants can be impeccably reproduced, while there is an at... | 11/18/2008 |
| 7428488 | Received voice processing apparatus A received voice processing apparatus is provided, in which the received voice processing apparatus includes: a target spectrum calculation part for calculating, for each frequency band, a target spectrum on the basis of a compression ratio for a voice spectrum; a g... | 09/23/2008 |
| 7428489 | Encoding method and apparatus, and decoding method and apparatus In a decoding apparatus (30), power compensation spectrum generation/composition units (371 to 374) adjust power of power compensation spectrums PCSP based on quantization accuracy information, normalization coefficients, g... | 09/23/2008 |
| 7426557 | System, method, and service for inducing a pattern of communication among various parties A communication pattern inducing system focuses on the propagation of topics amongst a plurality of nodes based on the text of the node rather than hyperlinks of the node. A node could represent a weblog or any other source of information such as person, a conversat... | 09/16/2008 |
| 7412380 | Ambience extraction and modification for enhancement and upmix of audio signals Modifying an audio signal comprising a plurality of channel signals is disclosed. At least selected ones of the channel signals are transformed into a time-frequency domain. The at least selected ones of the channel signals are compared in the time-frequency domain ... | 08/12/2008 |
| 7395078 | Voice over short message service A method of sending a voice message via a mobile communication device, said method involving: receiving an utterance from a user of the mobile communication device; generating a non-text representation of the received utterance; inserting the non-text representation... | 07/01/2008 |
| 7391875 | Peak-limiting mixer for multiple audio tracks A method for processing audio signal that includes receiving a plurality of digital audio signals and calculating signal levels of them. The next step is calculating smooth attenuation signal for each one of the input audio signals. The smooth attenuation signals ar... | 06/24/2008 |
| 7389226 | Optimized windows and methods therefore for gradient-descent based window optimization for linear prediction analysis in the ITU-T G.723.1 speech coding standard Primary and alternate optimization procedures are used to improve the ITU-T G.723.1 speech coding standard (the “Standard”) by replacing the Hamming window of the Standard with an optimized window, with two windows, or with two windows and an additional performa... | 06/17/2008 |
| 7372998 | System and method for efficient non-overlapping partitioning of rectangular regions of interest in multi-channel detection A system and method in a multi-channel detection system for multi-rate filter bank applications for converting overlapping rectangular two-dimensional (2D) regions into a new set of non-overlapping rectangular regions for the efficient reconstruction of a signal whe... | 05/13/2008 |
| 7373282 | Fault severity check and source identification A fault severity check and source identification method for a frequency domain instrument accesses acquired reflection data for a transmission line under test. From the acquired data reflection surfaces are isolated as a function of distance. Each reflection surface... | 05/13/2008 |
| 7363223 | Policy analysis framework for conversational biometrics The present invention describes a framework for the analytical and visual analysis and tuning of complex speaker verification systems guided by a policy finite state machine. The Receiver Operating Curve associated with the acoustic speaker recognition task is trans... | 04/22/2008 |
| 7359857 | Method and system of correcting spectral deformations in the voice, introduced by a communication network A technique for correcting the voice spectral deformations introduced by a communication network. Prior to the operation of equalization of the voice signal of a speaker, the constitution of classes of speakers is communicated, with one voice reference per class. Th... | 04/15/2008 |
| 7353169 | Transient detection and modification in audio signals A system and method are disclosed for transient detection and modification in audio signals. Digital signal processing techniques are used to detect transients and modify an audio signal to enhance or suppress such transients, as desired. A transient audio event is ... | 04/01/2008 |
| 7349348 | Method and apparatus for determining a network topology in the presence of network address translation The present invention may be used for determining a topology of a network in the presence of network address translation. From an active client behind a translating device, communications are initiated that effect the network address translation. The communications ... | 03/25/2008 |
| 7340375 | Method and apparatus for noise floor estimation A method and device are provided for an improved system and method of estimating the noise floor of a wideband signal without full knowledge of the nature of the narrowband signals contained therein, and provides digital characteristics to allow real-time signal pro... | 03/04/2008 |
| 7324927 | Fast feature selection method and system for maximum entropy modeling A method to select features for maximum entropy modeling in which the gains for all candidate features are determined during an initialization stage and gains for only top-ranked features are determined during each feature selection stage. The candidate features are... | 01/29/2008 |
| 7319954 | Multi-channel codebook dependent compensation Methods and apparatus, in the context of speech recognition, for compensating in the cepstral domain for the effect of an interfering signal by using a reference signal. ... | 01/15/2008 |
| 7302482 | Traffic flow optimisation system A method of calculating data traffic flow in a communications network, the communications network comprising a plurality of nodes including a plurality of source nodes and a plurality of destination nodes, the nodes being connected to one another by links, the metho... | 11/27/2007 |
| 7299175 | Normalizing to compensate for block size variation when computing control parameter values for quality and rate control for digital audio An audio encoder regulates quality and bitrate with a control strategy. The strategy includes several features. First, an encoder regulates quantization using quality, minimum bit count, and maximum bit count parameters. Second, an encoder regulates quantization usi... | 11/20/2007 |
| 7288072 | User interface for automated diagnostic hearing test Method and system are disclosed for a multimedia user interface for an automated diagnostic hearing test. The user interface provides a means for a patient to interact with the automated hearing test to complete each test. The patient is given instructions and guida... | 10/30/2007 |
| 7283967 | Encoding device decoding device An encoding device (100) includes (i) a first encoding unit (132) that encodes spectral data in the lower frequency band represented by a plularity of parameters, out of the spectral data obtained by transforming an audio signal inputted for a fixed ti... | 10/16/2007 |
| 7283956 | Noise suppression A method and apparatus for noise suppression is described herein. The channel gain is controlled based on a degree of variability of the background noise. The noise variability estimate is used in conjunction with a variable attenuation concept to produce a family o... | 10/16/2007 |
| 7277550 | Enhancing audio signals by nonlinear spectral operations A system and method are disclosed for enhancing audio signals by nonlinear spectral operations. Successive portions of the audio signal are processed using a subband filter bank. A nonlinear modification is applied to the output of the subband filter bank for each s... | 10/02/2007 |
| 7277537 | Tone, modulated tone, and saturated tone detection in a voice activity detection device In a voice activity detection (VAD) device a method for defining tone signals comprises defining a threshold for zero amplitude change, calculating a zero crossing rate of a signal, extracting a set of parameters from a plurality of duration periods of the signal, d... | 10/02/2007 |
| 7272556 | Scalable and embedded codec for speech and audio signals A system and method for processing of audio and speech signals is disclosed, which provide compatibility over a range of communication devices operating at different sampling frequencies and/or bit rates. The analyzer of the system divides the input signal in differ... | 09/18/2007 |
| 7272557 | Method and apparatus for quantizing model parameters A method of quantizing a model parameter includes applying the model parameter to a non-linear scaling function to produce a scaled model parameter and quantizing the scaled model parameter to form a quantized model parameter. In further embodiments, likelihoods for... | 09/18/2007 |
| 7269552 | Quantizing speech signal codewords to reduce memory requirements For the coding or decoding of speech signal sampled values, the values contained in the code books/code tables for the generation of the speech signal parameters are stored in quantized form. The processing can be carried out using processors with whole-numbe... | 09/11/2007 |
| 7269553 | Pseudo-cepstral adaptive short-term post-filters for speech coders Methods and systems for filtering synthesized or reconstructed speech are implemented. A filter based on a set of linear predictive coding (LPC) coefficients is constructed by transforming the LPC coefficients to the pseudo-cepstrum, a domain existing between LPC do... | 09/11/2007 |
| 7254267 | Encoder for volume data A volume data encoder with high encoding efficiency is provided. The object of the coding is volume data which contains a plurality of tomogram planes output from a CT and an MRI. A header analysis unit separates each plane image into header information and pixel in... | 08/07/2007 |
