197434 ⎘
Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders using subband decomposition Subband vocoders
Partially complex modulated filter bank
#302Low complexity MPEG encoding for surround sound recordings
#303Method and apparatus for adaptive sub-band allocation of spectral coefficients
#304Audio encoding method, audio decoding method, audio encoding device, audio decoding device, program, and audio encoding/decoding system
#305Spectrum harmonic/noise sharpness control
#306AUDIO CODING APPARATUS, AUDIO CODING METHOD AND RECORDING MEDIUM
#307Encoding device and method including encoding of error transform coefficients
#308Encoding device, decoding device, and method thereof for specifying a band of a great error
#309ENCODING DEVICE, DECODING DEVICE, AND METHOD THEREOF
#310Audio encoding device, method, and program which controls the number of time groups in a frame using three successive time group energies
#311Methods for improving high frequency reconstruction
#312Conversion Between Sub-Band Field Representations for Time-Varying Filter Banks
#313Transform coder and transform coding method
#314Fast synthesis sub-band filtering method for digital signal decoding
#315Audio compression
#316Packet loss concealment for a sub-band predictive coder based on extrapolation of excitation waveform
#317Audio decoding
#318Broadband frequency translation for high frequency regeneration
#319Encoding apparatus and encoding method
#320Encoding device and decoding device
#321Echo cancellation for a packet voice system
#322Wideband audio signal coding/decoding device and method
#323PARAMETRIC AUDIO CODING COMPRISING AMPLITUDE ENVELOPS
#324Methods and apparatus for improving high frequency reconstruction of audio and speech signals
#325Efficient coding of digital media spectral data using wide-sense perceptual similarity
#326Encoding Method and Encoding Apparatus
#327Device for perceptual weighting in audio encoding/decoding
#328Spectral translation/folding in the subband domain
#329Method and arrangements for audio signal encoding
#330METHOD, MEDIUM AND APPARATUS FOR ENCODING AND/OR DECODING SIGNAL
#331Flexible frequency and time partitioning in perceptual transform coding of audio
#332METHOD AND APPARATUS TO ENCODE AND DECODE AN AUDIO SIGNAL
#333METHOD AND APPARATUS FOR ENCODING/DECODING AUDIO SIGNAL CONTAINING NOISE AT LOW BIT RATE
#334Embedded silence and background noise compression
#335Audio encoding device, audio encoding method, and audio encoding program for encoding a wide-band audio signal
#336Systems, methods, and apparatus for gain coding
#337Method and apparatus for encoding and decoding high frequency signal
#338System and method for canceling acoustic echoes in audio-conference communication systems
#339Audio encoding device, decoding device, and method capable of flexibly adjusting the optimal trade-off between a code rate and sound quality
#340Packet loss concealment for a sub-band predictive coder based on extrapolation of excitation waveform
#341Determining scale factor values in encoding audio data with AAC
#342Apparatus and method of wideband decoding to synthesize a decoded excitation signal with a generated high frequency band signal
#343Methods and devices for switching between sound signal coding modes at a coder and for producing target signals at a decoder
#344Method and apparatus to encode and/or decode signal using bandwidth extension technology
#345Audio signal encoding apparatus and method
#346Method and apparatus for audio encoding and decoding using wideband psychoacoustic modeling and bandwidth extension
#347Methods and devices for low-frequency emphasis during audio compression based on ACELP/TCX
#348Audio decoding using variable-length codebook application ranges
#349Adaptive time and/or frequency-based encoding mode determination apparatus and method of determining encoding mode of the apparatus
#350Audio coding apparatus, audio decoding apparatus, audio coding method and audio decoding method
#351Partially complex modulated filter bank
#352Audio coding
#353Methods and apparatus for implementing embedded scalable encoding and decoding of companded and vector quantized audio data
#354Systems, methods, and apparatus for split-band filtering and encoding of a wideband signal
#355Systems, methods, and apparatus for wideband speech coding
#356Systems, methods, and apparatus for highband burst suppression
#357Synthesis subband filter process and apparatus
#358METHOD AND APPARATUS TO ENCODE/DECODE AUDIO SIGNAL
#359Method and system for optimized architecture for bluetooth streaming audio applications
#360Scalable audio encoding and/or decoding method and apparatus
#361Adjustment of scale factors in a perceptual audio coder based on cumulative total buffer space used and mean subband intensities
#362Frequency segmentation to obtain bands for efficient coding of digital media
#363Encoding device and decoding device
#364Encoding device and decoding device
#365Systems, methods, and apparatus for highband time warping
#366Systems, methods, and apparatus for gain factor attenuation
#367Systems, methods, and apparatus for anti-sparseness filtering
#368Systems, methods, and apparatus for gain factor smoothing
#369Systems, methods, and apparatus for highband excitation generation
#370Systems, methods, and apparatus for quantization of spectral envelope representation
#371Method and device for spectral reconstruction of an audio signal
#372Band based audio coding and decoding apparatuses, methods, and recording media for scalability
#373Adaptive variable bit rate audio compression encoding
#374Encoding device and decoding device
#375Processing of encoded signals
#376Efficient spectral envelope coding using variable time/frequency resolution and time/frequency switching
#377Efficient spectral envelope coding using variable time/frequency resolution and time/frequency switching
#378Method, process and device for coding audio signals
#379Sinusoidal audio coding
#380Audio signal encoding device and storage medium for storing encoding program
#381Efficient filter bank computation for audio coding
#382Methods and system for encoding/decoding signals including scrambling spectral representation and downsampling
#383Efficient coding of digital media spectral data using wide-sense perceptual similarity
#384Digital audio watermark inserting/detecting apparatus and method
#385SUBBAND ANALYSIS/SYNTHESIS FILTERING METHOD
#386Methods for improving high frequency reconstruction
#387Techniques for improving audio clarity and intelligibility at reduced bit rates over a digital network
#388Signal adaptation for higher band coding in a codec utilizing band split coding