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Data Processing: Speech Signal Processing, Linguistics, Language Translation, And Audio Compression/decompression > Audio Signal Bandwidth Compression Or Expansion Audio Signal Bandwidth Compression Or ExpansionAudio Signal Bandwidth Compression Or Expansion 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.11/30/06 - 20060271374 - Method for compression and expansion of digital audio data Digital audio data are divided into a plurality of frames, each of which includes a desired number of sub-band samples, which are gradually increased in a range between “16” and “1024”, and are then compressed by way of psychoacoustics analysis and quantization, whereby compressed data are realized with a high ... 11/30/06 - 20060271373 - Robust decoder Techniques and tools related to delayed or lost coded audio information are described. For example, a concealment technique for one or more missing frames is selected based on one or more factors that include a classification of each of one or more available frames near the one or more missing ... 11/09/06 - 20060253288 - Audio coding and decoding apparatus, computer device incorporating the same, and method thereof An audio coding and decoding device, which is used to realize the coding and decoding functions, audio coding and decoding device comprising: a first circuit, which is used to perform the first operation of said audio coding and decoding function; a general-purpose processor, which is used to perform the second ... 09/28/06 - 20060217988 - Method and apparatus for adaptive level control Adaptive Level Control (ALC) is performed directly in a coded domain. A Coded Domain Adaptive Level Control (CD-ALC) system modifies at least one parameter of a first encoded signal, resulting in corresponding modified parameter(s). The CD-ALC system replaces the parameter(s) of the first encoded signal with the modified parameter(s), resulting ... 08/03/06 - 20060173691 - Audio mixing processing apparatus and audio mixing processing method An audio mixing processing apparatus includes input units configured to receive a plurality of audio data, a mixing unit configured to mix the plurality of inputted audio data based on predetermined mixing factors, respectively, an encoding unit configured to encode the mixed audio data, and an output unit configured to ... 07/06/06 - 20060149559 - Voice signal processor A voice processor performing logarithm compression and decompression enabling various signal processing functions to be efficiently added. When there is a μ Law compression input, an approximate logarithm conversion process is performed. The processor performs bit inversion on the μ Law compression value and sets MSB to “0” to obtain ... 06/29/06 - 20060143019 - Digital audio device and audio data output method A digital audio device for outputting information recorded on a recording medium such as a DVD as audio data in compliance with a predetermined standard, wherein the digital audio device produces such audio data that a device connected to the digital audio device can identify audio track boundaries. A digital ... 06/29/06 - 20060143018 - Processing digital data An original digital audio signal represents unimpaired audio information. The digital audio signal is compressed and encrypted without substantial impairment to produce a first audio signal. A second, unencrypted, audio signal is produced. The first and second audio signals are combined. Preferably the first audio signal is losslessy compressed. The ... 05/18/06 - 20060106620 - Audio spatial environment down-mixer An audio spatial environment engine is provided for converting from an N channel audio system to an M channel audio system, such as in a dynamic down-mixer where N and M are integers and N is greater than M. The dynamic down-mix methodology consists of a static down-mix system utilizing ... 05/18/06 - 20060106619 - Bandwidth extension of bandlimited audio signals A system extends a bandwidth of bandlimited audio signals by analyzing bandlimited audio signals at a transmission cycle rate. The analyzer may obtain a bandlimited parameter at a transmission cycle rate. A mapping device or logic in the system obtains a wideband parameter based on the bandlimited parameter. An audio ... 05/04/06 - 20060095269 - Method of decoding two-channel matrix encoded audio to reconstruct multichannel audio The present invention provides a method and apparatus for decoding two-channel matrix encoded audio (32) to reconstruct multichannel audio (34) that more closely approximates a discrete surround-sound presentation. This is accomplished by subband filtering (54) the two-channel matrix encoded audio, mapping (70) each of the subband signals into an expanded ... 04/27/06 - 20060089836 - System and method of signal pre-conditioning with adaptive spectral tilt compensation for audio equalization Systems and methods for pre-conditioning a received audio signal prior to audio equalization of the audio signal are provided. The system (100) includes a spectral tilt estimator (110) for estimating a spectral tilt of the received audio signal, and a compensative filter synthesizer (115) for synthesizing a compensative filter based ... 04/20/06 - 20060085200 - Diffuse sound shaping for bcc schemes and the like An input audio signal having an input temporal envelope is converted into an output audio signal having an output temporal envelope. The input temporal envelope of the input audio signal is characterized. The input audio signal is processed to generate a processed audio signal, wherein the processing de-correlates the input ... 04/13/06 - 20060080110 - Transport demultiplexor with bit maskable filter The preferred embodiment of the present invention provides an improved transport demultiplexor that can receive and filter different data types before sending the data to system memory. The preferred embodiment provides a string comparator to facilitate real time filtering of continuous incoming data before loading the data into system memory. ... 04/13/06 - 20060080109 - Audio decoding apparatus The present invention provides an audio decoding apparatus which can decode and reproduce a plurality of compressed audio streams simultaneously without sound interruption, even when the number of samples per frame is different. The audio decoding apparatus includes: a first and second audio decoder which decode two inputted compressed audio ... 04/13/06 - 20060080108 - Sound effect processing circuit The invention provides a sound effect processing circuit, in which a multiplexer is utilized to receive and switch the sound effect source, i.e. output digital signal of an IC chip, to a slot with a replaceable D/A decoder and a communication and networking riser. The D/A decoder in the slot ... 04/06/06 - 20060074693 - Audio coding device with fast algorithm for determining quantization step sizes based on psycho-acoustic model An efficient audio coding device that quantizes and encodes digital audio signals with a reduced amount of computation. A spatial transform unit subjects samples of a given audio signal to a spatial transform, thus obtaining transform coefficients of the signal. With a representative value selected out of the transform coefficients ... 04/06/06 - 20060074692 - Moving picture coding apparatus, moving picture decoding apparatus, moving picture coding method, moving picture decoding method, moving picture coding program, and moving picture decoding program A moving picture coding apparatus according to an embodiment is arranged to define a plurality of images in a moving picture two by two as targets to be coded. The images to be coded are decomposed into subbands, a high-subband signal and a low-subband signal, by a subband decomposing process. ... 03/09/06 - 20060053019 - Recording and reproducing apparatus for use with optical recording medium having real-time, losslessly encoded data A lossless encoding and/or decoding apparatus which encodes audio data on a real-time basis includes a lossless compression unit which losslessly compression encodes the audio data stored in an input buffer in units of predetermined data and outputs the encoded data in sequence, and an output buffer which stores the ... 03/09/06 - 20060053018 - Advanced processing based on a complex-exponential-modulated filterbank and adaptive time signalling methods A synthesizer for generating a decorrelation signal using an input signal is operative on a plurality of subband signals, wherein a subband signal includes a sequence of at least two subband samples, the sequence of the subband samples representing a bandwidth of the subband signal, which is smaller than a ... 03/02/06 - 20060047521 - Method and apparatus for mp3 decoding A memory optimization method for a MP3 decoder. In a pipeline structure for speeding matrix calculation in Mp3 decoding, an output sequence of IMDCT calculation is altered so that matrix calculation is activated before completing the IMDCT calculation. A decoding control method allows pipeline processing in MP3 decoding, with decoding ... 02/16/06 - 20060036446 - Integrated playback apparatus and internal operating method thereof The present invention provides a system-on-chip for an optical disc playback apparatus and operating method thereof. The system-on-chip includes a processing unit for issuing providing a request data command and a requested data transmission data command, a servo module, and a MPEG module. The servo module receives the request data ... 02/09/06 - 20060031075 - Method and apparatus to recover a high frequency component of audio data A method and an apparatus to recover a high frequency component of an MP3 encoded audio signal in an audio decoder. The method includes: generating a filter bank value of a low frequency band from a modified discrete cosine transform (MDCT) coefficient, which is extracted from an input bitstream according ... 01/26/06 - 20060020475 - Compressed audio stream data decoder memory sharing techniques A decoder (10) decodes compressed data. A memory (44) stores the compressed data and stores operating data and operating code for a plurality of decompression algorithms requiring different amounts of memory for the operating data and operating code and requiring different amounts of memory to store compressed data corresponding to ... 01/26/06 - 20060020474 - Universal container for audio data Storing audio data encoded in any of a plurality of different audio encoding formats is enabled by parametrically defining the underlying format in which the audio data is encoded, in audio format and packet table chunks. A flag can be used to manage storage of the size of the audio ... 01/19/06 - 20060015348 - Television program transmission, storage and recovery with audio and video synchronization An apparatus and methods are described for receiving, storing, and recovering from storage one or more television program while maintaining proper audio to video synchronization or lip sync when the program is displayed. Preferably the audio and video portions are in digital form and may be compressed or uncompressed. The ... 01/19/06 - 20060015347 - Chime mp3 display A MP3 chime player and display device having a MP3 microcontroller unit being integrated with an in-store display. The in-store display of the present invention has MP3 play selection buttons and associated selection insignia. The microcontroller is in electronic communication with a reprogrammable digital storage device, an electronic port, speakers, ... 01/19/06 - 20060015346 - Method for transmitting audio signals according to the prioritizing pixel transmission method A method for the transmission of audio signals between a transmitter and at least one receiver operates according to the prioritizing pixel transmission method. The audio signal is first broken down into a number a spectral fractions. The broken-down audio signal is stored in a two-dimension array with a plurality ... 01/12/06 - 20060009985 - Multi-channel audio system A multi-channel audio system using a wireless transmission network used in a home theater includes: a master decoding an input multi-channel audio stream, outputting the decoded multi-channel audio stream, extracting a predetermined audio stream supported by a slave from the input multi-channel audio stream, and transmitting the extracted audio stream ... 01/12/06 - 20060009984 - Computer apparatus and control method thereof A computer apparatus and a control method thereof. The computer apparatus includes: a computer main body including a main output device outputting an audio signal, a controller, and a connecting part; a first auxiliary output device to output an audio signal; and a second auxiliary output device to output the ... 01/12/06 - 20060009983 - Method and system for adjusting digital audio playback sampling rate In a packet communication network, to compensate for rate mismatches between transmitting and receiving devices, an apparatus and method provides for adjusting the playback sampling rate and for monitoring the buffer. The receiving device will monitor its buffer; relevant buffer data can comprise whether the buffer is approaching capacity or ... 01/05/06 - 20060004583 - Multi-channel synthesizer and method for generating a multi-channel output signal A multi-channel synthesizer includes a post processor for determining post processed reconstruction parameters or quantities derived from the reconstruction parameter for an actual time portion of the input signal so that the post processed reconstruction parameter or the post processed quantity is different from the corresponding quantized and inversely quantized ... 12/01/05 - 20050267763 - Multichannel audio extension A method is shown for supporting a multichannel audio extension at an encoding end of a multichannel audio coding system. In order to improve the audio quality over a large frequency range, the method comprises transforming each channel of a multichannel audio signal into the frequency domain and dividing a ... 11/24/05 - 20050261911 - Apparatus for reducing stress A method and apparatus for relaxing and reducing stress in an individual is disclosed. The method involves exposing the individual to combined music, preferably anxiolitic music, and randomly selected voiceover. The apparatus comprises a system, suitable for performing the method, that is capable of reproducing a wide variety of different ... 11/17/05 - 20050256723 - Efficient filter bank computation for audio coding Low-complexity synthesis filter bank for MPEG audio decoding uses a factoring of the 64×32 matrixing for the inverse-quantized subband coefficients. Factoring into non-standard 4-point discrete cosine and sine transforms, point-wise multiplications and combinations, and non-standard 8-point discrete cosine and sine transforms limits memory requirements and computational complexity. ... 11/17/05 - 20050256722 - System and method for lossless audio encoding and decoding Audio information is encoded, sample by sample, by creating a table of encoded audio sample values in which redundant ones of the encoded audio sample values share common table entries. The encoding method may include comparing a current audio data sample to be encoded to previously encoded audio data samples ... 11/03/05 - 20050246180 - Audio signal process circuit An audio signal process circuit to convert a selected input audio signal into a digital audio signal, and to apply an MPEG encode/decode process to the converted digital audio signal upon recording/playing, includes an audio selecting unit to select one input terminal out of one or more external audio input ... 11/03/05 - 20050246179 - Systems and methods of remotely enabling sound enhancement techniques A system and method of remotely enabling sound enhancement techniques is disclosed. In an embodiment, a watermark is embedded in an encoded multi-channel audio stream to remotely enable an enhancement decoder portion of a multi-channel audio decoder. ... 11/03/05 - 20050246178 - Scalable lossless audio codec and authoring tool An audio codec losslessly encodes audio data into a sequence of analysis windows in a scalable bitstream. This is suitably done by separating the audio data into MSB and LSB portions and encoding each with a different lossless algorithm. An authoring tool compares the buffered payload to an allowed payload ... 10/27/05 - 20050240415 - Method and apparatus for encoding signals The invention concerns a method of encoding signals, in particular digitised audio signals, with an encoding device for encoding the signal in an encoding format and a processing device for processing the encoded signal. Methods of that kind are known for example from European patent specification No 290 581. In ... 10/27/05 - 20050240414 - Data processing system, data processing method, data processing device, and data processing program An input data is divided into blocks of predetermined time units and then further divided into a plurality of bands. Each band is coded and compressed to prepare a basic sub-block essential for data reproduction and a plurality of extension sub-blocks contributing to improvement of the quality of the reproduced ... 10/20/05 - 20050234731 - Digital media universal elementary stream Described techniques and tools include techniques and tools for mapping digital media data (e.g., audio, video, still images, and/or text, among others) in a given format to a transport or file container format useful for encoding the data on optical disks such as digital video disks (DVDs). A digital media ... 08/25/05 - 20050187777 - Layer 2 compression/decompression for mixed synchronous/asynchronous transmission of data frames within a communication network A device is disclosed for compressing data contained in input frames to be compressed constituted of stream frames defining portions of TRAU and signaling frames that have to be transmitted within a communication network and each of which is constituted of at least a header containing control data representative at ... 08/04/05 - 20050171785 - Audio decoding device, decoding method, and program An energy corrector (105) for correcting a target energy for high-frequency components and a corrective coefficient calculator (106) for calculating an energy corrective coefficient from low-frequency subband signals are newly provided. These processors perform a process for correcting a target energy that is required when a band expanding process is ... 07/28/05 - 20050165611 - 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 perceptually similar version of the omitted spectral coefficients, represented as a scaled version ... 07/21/05 - 20050159961 - Coding apparatus and method, decoding apparatus and method, and program storage medium In order to obtain coded data which does not strike viewers and listeners as being incongruous, when plural audio data are to be coded, a coding program groups the respective audio data into one audio data, codes the grouped audio data in sequence with a predetermined number of samples being ... 07/14/05 - 20050154597 - Synthesis subband filter for mpeg audio decoder and a decoding method thereof A synthesis filter for an MPEG audio decoder, and a decoding method thereof. The synthesis filter for an MPEG audio decoder includes a butterfly computation part which performs a butterfly computation with respect to an input MPEG audio subband sample by a predetermined unit, a matrix computation part which performs ... 07/07/05 - 20050149339 - Audio decoding apparatus and method An audio decoding apparatus decodes high frequency component signals using a band expander that generates multiple high frequency subband signals from low frequency subband signals divided into multiple subbands and transmitted high frequency encoded information. The apparatus is provided with an aliasing detector and an aliasing remover. The aliasing detector ... 06/30/05 - 20050144017 - Device and process for encoding audio data An MPEG-1 layer 3 audio encoder, including a scalefactor generator for determining first scalefactors for encoding a block of audio data if a temporal masking transient is not detected in said block of audio data; and for selecting the maximum of said scalefactors for encoding said block of audio data ... ### FreshPatents.com Support |