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Data Processing: Speech Signal Processing, Linguistics, Language Translation, And Audio Compression/decompression > Speech Signal Processing > For Storage Or Transmission > Linear Prediction Linear PredictionLinear Prediction patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.11/23/06 - 20060265214 - System and method for linear prediction In a digital signal processor (DSP), input data is configured as a data matrix comprising data samples collected from an input signal. A weight vector is applied to the matrix, where the weight vector comprises three parts including (a) a rank reduction transformation produced by decomposition of data samples in ... 11/16/06 - 20060259296 - Method and apparatus for generating encoded speech signals A method for processing speech in a spread spectrum communication system uses CELP speech encoded signals. A speech input receives samples of a speech signal and a codebook analysis block for selects an index of a code from each of a plurality of codebooks. A weighted synthesis filter is used ... 11/02/06 - 20060247926 - Information flow transmission method whereby said flow is inserted into a speech data flow, and parametric codec used to implement same For the transmission of a secondary information flow between a transmitter and a receiver, the secondary information flow is inserted at a parametric vocoder of the transmitter which generates a main information flow. The main information flow is a speech data flow encoding a speech signal and is transmitted from ... 09/28/06 - 20060217972 - Method and apparatus for modifying an encoded signal Signal Quality Enhancement is performed directly in a coded domain. Coded Domain-Signal Quality Enhancement (CD-SQE) is applied to an encoded signal populated substantially with encoded signal bits to produce an enhanced encoded signal. The enhanced encoded signal is outputted. Thus, the signal does not have to go through intermediate decoder/re-encoder(s), ... 09/28/06 - 20060217971 - Method and apparatus for modifying an encoded signal Voice Quality Enhancement is performed directly in a coded domain. At least one parameter of a first encoded signal is modified, which results in a corresponding at least one modified parameter. The at least one parameter of the first encoded signal is replaced with the at least one modified parameter, ... 09/28/06 - 20060217970 - Method and apparatus for noise reduction Noise Reduction (NR) is performed directly in a coded domain. A Coded Domain Noise Reduction (CD-NR) system modifies at least one parameter of a first encoded signal, resulting in corresponding modified parameter(s). The CD-NR system replaces the parameter(s) of the first encoded signal with the modified parameter(s), resulting in a ... 09/28/06 - 20060217969 - Method and apparatus for echo suppression Acoustic Echo Suppression (AES) or ES is performed directly in a coded domain. A Coded Domain Acoustic Echo Suppression (CD-AES) system modifies at least one parameter of a first encoded signal, resulting in corresponding modified parameter(s). The CD-AES system replaces the parameter(s) of the first encoded signal with the modified ... 09/14/06 - 20060206317 - Speech coding apparatus and speech decoding apparatus First codebook and second codebook respectively have two subcodebooks, and in respective codebooks, addition sections obtain respective excitation vectors by adding sub-excitation vectors fetched from respective two subcodebooks. Addition section obtains an excitation sample by adding those excitation vectors. According to the aforementioned constitution, it is possible to store sub-excitation ... 08/24/06 - 20060190245 - System for generating a wideband signal from a received narrowband signal A system for use in providing a wideband signal from a received narrowband signal is set forth. The system comprises an extracted narrowband feature vector that corresponds to at least one characteristic of the narrowband signal. A narrowband codebook having one or more narrowband codebook index vectors is also employed, ... 07/20/06 - 20060161427 - Compensation of transient effects in transform coding The present invention provides a method for compensating transient effects in transform coding and decoding of a combined speech and audio in electronic devices by using a transform based time-frequency domain codec. The method can combine, e.g., a CELP (code excited linear prediction) type speech codec and a transform type ... 07/13/06 - 20060155531 - Transform coding system and method A transform coding system and method are disclosed which utilize a modified quantization technique which advantageously foregoes the need for inverse quantization at the decoder. New techniques for optimizing an entropy code for the modified quantizer and for constructing the entropy codes are also disclosed. ... 07/06/06 - 20060149538 - High-band speech coding apparatus and high-band speech decoding apparatus in wide-band speech coding/decoding system and high-band speech coding and decoding method performed by the apparatuses A high-band speech encoding apparatus and a high-band speech decoding apparatus that can reproduce high quality sound even at a low bitrate when wideband speech encoding and decoding using a bandwidth extension function, and a high-band speech encoding and decoding method performed by the apparatuses. The high-band speech encoding apparatus ... 07/06/06 - 20060149537 - Code conversion method and device for code conversion A method of converting code, which converts first codes based on a first system to second codes based on a second system, is characterized in that, when the first codes are unavailable, the second codes are obtained by directly using speech parameters which are ever decoded in accordance with the ... 06/29/06 - 20060143003 - Speech encoding device The present invention is a synthetic speech encoding device that produces a synthetic speech signal which closely matches an actual speech signal. The actual speech signal is digitized, and excitation pulses are selected by minimizing the error between the actual and synthetic speech signals. The preferred pattern of excitation pulses ... 06/15/06 - 20060129389 - Spectrum modeling Modeling a target spectrum (S) is provided by determining (21) filter parameters (pi,qi) of a filter which has a frequency response approximating the target spectrum (S), wherein the target spectrum is split in at least a first part and a second part, a first modeling operation is used on the ... 06/15/06 - 20060129388 - Apparatus and method for reproducing midi file Apparatus and method for reproducing a MIDI-based music file are provided. According to the apparatus and method, a plurality of notes and note reproduction times are extracted from the MIDI file, a section where envelope values of sound source samples exponentially reduce is changed into a linear section, and the ... 06/08/06 - 20060122828 - Highband speech coding apparatus and method for wideband speech coding system Provided is a highband coding apparatus and method for a wideband coding system. The coding apparatus and method can reduce a pre-echo phenomenon by encoding the highband based on lowband encoding information and Temporal Noise Shaping technique. A highband encoding apparatus includes: a domain converter for converting the domain of ... 05/18/06 - 20060106599 - Precomputation and transmission of time-dependent information for varying or uncertain receipt times A system that facilitates analyzing time-related data comprises an interface component that receives a packet of information that includes a plurality of predictions and timing information associated therewith. A time-analysis component communicatively coupled to the interface component compares the timing information associated with the plurality of predictions with a current ... 04/06/06 - 20060074641 - Methods, devices and systems for improved codebook search for voice codecs An electronic circuit (1100) including a processor circuit (1110) and a storage circuit establishing a speech coder (1170) for execution by said processor (1110), the speech coder (1170) for approximating speech by pulses having pulse positions selectable from a codebook (550), the speech coder (1170) operable to obtain (1310) a ... 03/30/06 - 20060069552 - Apparatus and method for displaying signals of a detector An analytical element is disclosed for indicating concentration of a target analyte. The analytic element includes a transparent layer having a first side and a second side. A reactive layer faces the first side of the transparent layer. This reactive layer changes colorimetrically in response to concentration of the target ... 02/09/06 - 20060031065 - Efficient spectral envelope coding using variable time/frequency resolution and time/frequency switching The present invention provides a new method and an apparatus for spectral envelope encoding. The invention teaches how to perform and signal compactly a time/frequency mapping of the envelope representation, and further, encode the spectral envelope data efficiently using adaptive time/frequency directional coding. The method is applicable to both natural ... 02/09/06 - 20060031064 - Efficient spectral envelope coding using variable time/frequency resolution and time/frequency switching The present invention provides a new method and an apparatus for spectral envelope encoding. The invention teaches how to perform and signal compactly a time/frequency mapping of the envelope representation, and further, encode the spectral envelope data efficiently using adaptive time/frequency directional coding. The method is applicable to both natural ... 01/26/06 - 20060020450 - Method and apparatus for coding or decoding wideband speech A wideband speech coding method comprising identifying whether an input speech signal is a narrowband signal or a wideband signal, and coding the input speech signal by controlling a predetermined parameter of a wideband speech coding process based on the identification result. ... 01/19/06 - 20060015330 - Voice coding/decoding method and apparatus The present invention provides a method of voice coding/decoding. Various parameters computed during voice coding are compressed for transmission. CELP coding of high compressibility and decoding corresponding to CELP coding is implemented without degradation of voice quality and transmission delay. An exemplary method of the present invention comprises performing voice ... 01/19/06 - 20060015329 - Apparatus and method for audio coding A method and apparatus for coding information are described. In one embodiment, an encoder for encoding a first set of data samples comprises a waveform analyzer to determine a set of waveform parameters from a second set of data samples, a waveform synthesizer to generate a set of predicted samples ... 01/19/06 - 20060015328 - Sinusoidal audio coding Coding of an audio signal (x) represented by a respective set of sampled signal values for each of a plurality of sequential segments is disclosed. The sampled signal values are used to determine sinusoidal components (CS) for each of the plurality of sequential segments. The sinusoidal components (CS) are subtracted ... 12/22/05 - 20050283361 - Audio signal processing method, audio signal processing apparatus, audio signal processing system and computer program product An apparatus and method for extracting a predetermined non-harmonic structured spectral component contained in an audio signal. Then, the extracted predetermined spectral component is increased or decreased. In this process, the spectrum of the audio signal is calculated by frequency analysis, so that a spectrum component corresponding to the predetermined ... 12/01/05 - 20050267742 - Audio encoding with different coding frame lengths The invention relates to a method for supporting an encoding of an audio signal, wherein at least one section of the audio signal is to be encoded with a coding model that allows the use of different coding frame lengths. In order to enable a simple selection of the respectively ... 11/24/05 - 20050261898 - Method and adaptive filter for processing a sequence of input data A method and adaptive filter for processing a sequence of input data for an audio system may have the input data provided to first and second predictive filters, and the data may be delayed in time before or after the second filter. One of the predictive filters may be backward-looking ... 11/24/05 - 20050261897 - Method and device for robust predictive vector quantization of linear prediction parameters in variable bit rate speech coding The present invention relates to a method and device for quantizing linear prediction parameters in variable bit-rate sound signal coding, in which an input linear prediction parameter vector is received, a sound signal frame corresponding to the input linear prediction parameter vector is classified, a prediction vector is computed, the ... 11/24/05 - 20050261896 - Audio coding According to a first aspect of the invention, at least part of an audio signal is coded in order to obtain an encoded signal, the coding comprising predictive coding the at least part of the audio signal in order to obtain prediction coefficients which represent temporal properties, such as a ... 10/27/05 - 20050240397 - Method of determining variable-length frame for speech signal preprocessing and speech signal preprocessing method and device using the same Disclosed are a device and a method of determining a variable-length frame for speech signal preprocessing, which can improve performance of speech signal processing during a speech signal preprocessing procedure, and a speech signal preprocessing method and device using such a preprocessing method. The preprocessing method includes the steps of ... 10/13/05 - 20050228653 - Method for encoding sound source of probabilistic code book A stochastic codebook associates a pulse position of a predetermined channel with a pulse position of another channel, searches for a pulse position by means of a predetermined algorithm, and outputs a code combining a found pulse position with a polarity code to an excitation vector creation section as a ... 10/13/05 - 20050228652 - Fixed sound source vector generation method and fixed sound source codebook At the speech encoding end, upon generation of an fixed excitation vector, the shape of an excitation vector output from pulse excitation codebook 301 is identified in pulse excitation vector shape identifier 302, a dispersion vector used for excitation vectors of the shape is output from dispersion vector storage 304, ... 09/01/05 - 20050192797 - Coding model selection The invention relates to an encoder (200) comprising an input (201) for inputting frames of an audio signal, a LTP analysis block (209) for performing a LTP analysis of the frames of the audio signal to form LTP parameters on the basis of the properties of the audio signal, and ... 08/04/05 - 20050171771 - Apparatus and method for speech coding A speech encoder includes an LPC synthesizer that obtains synthesized speech by filtering an adaptive excitation vector and a stochastic excitation vector stored in an adaptive codebook and in a stochastic codebook using LPC coefficients obtained from input speech. A gain calculator calculates gains of the adaptive excitation vector and ... 08/04/05 - 20050171770 - Method for speech coding, method for speech decoding and their apparatuses A high quality speech is reproduced with a small data amount in speech coding and decoding for performing compression coding and decoding of a speech signal to a digital signal. In speech coding method according to a code-excited linear prediction (CELP) speech coding, a noise level of a speech in ... 07/21/05 - 20050159943 - Compressed domain universal transcoder The system and method of the present invention comprises a compressed domain universal transcoder that transcodes a bit stream representing frames of data encoded according to a first compression standard to a bit stream representing frames of data according to a second compression standard. The method includes decoding a bit ... 07/21/05 - 20050159942 - Classification of speech and music using linear predictive coding coefficients Presented herein are systems and methods for classifying an audio signal. The audio signal is classified by calculating a plurality of linear prediction coefficients (LPC) for a portion of the audio signal; inverse filtering the portion of the audio signal with the plurality of linear prediction coefficients (LPC), thereby resulting ... 07/14/05 - 20050154584 - Method and device for efficient frame erasure concealment in linear predictive based speech codecs The present invention relates to a method and device for improving concealment of frame erasure caused by frames of an encoded sound signal erased during transmission from an encoder (106) to a decoder (110), and for accelerating recovery of the decoder after non erased frames of the encoded sound signal ... 06/30/05 - 20050143985 - Apparatus and method for concealing highband error in spilt-band wideband voice codec and decoding system using the same An apparatus for concealing a highband error in a spilt-band wideband voice codec in accordance with the present invention is disclosed. The apparatus includes: a lowband LPC coefficient extracting unit for extracting a lowband linear predictive coding (LPC) coefficient from a lowband voice signal passed by a lowband decoding unit; ... 06/30/05 - 20050143984 - Multirate speech codecs A method of determining a codec mode for encoding a frame in a communications system, the method comprising the steps of: receiving a sequence of signal samples arranged in frames; analysing a current frame to select a codec mode appropriate for the current frame; predicting the characteristics of a subsequent ... 06/16/05 - 20050131682 - Method and apparatus for transcoding between different speech encoding/decoding systems and recording medium Disclosed is a code converting apparatus for converting a first code sequence conforming to a first system to a second code sequence conforming to a second system, in which a speech decoding circuit acquires a first linear prediction coefficient and the information on an excitation signal from the first code ... 06/16/05 - 20050131681 - Continuous time warping for low bit-rate celp coding A signal modification technique facilitates compact voice coding by employing a continuous, rather than piece-wise continuous, time warp contour to modify an original residual signal to match an idealized contour, avoiding edge effects caused by prior art techniques. Warping is executed using a continuous warp contour lacking spatial discontinuities which ... ### FreshPatents.com Support - Terms & Conditions |