ClassID:

197434

G10L19/0208 - page 2 - CPC Classification

Classification description:

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

Recent Application in this class:
#301
20100169104
2010-07-01

Partially complex modulated filter bank

#302
20100169102
2010-07-01

Low complexity MPEG encoding for surround sound recordings

#303
20100161320
2010-06-24

Method and apparatus for adaptive sub-band allocation of spectral coefficients

#304
20100106509
2010-04-29

Audio encoding method, audio decoding method, audio encoding device, audio decoding device, program, and audio encoding/decoding system

#305
20100063803
2010-03-11

Spectrum harmonic/noise sharpness control

#306
20100023334
2010-01-28

AUDIO CODING APPARATUS, AUDIO CODING METHOD AND RECORDING MEDIUM

#307
20100017204
2010-01-21

Encoding device and method including encoding of error transform coefficients

#308
20100017200
2010-01-21

Encoding device, decoding device, and method thereof for specifying a band of a great error

#309
20100017199
2010-01-21

ENCODING DEVICE, DECODING DEVICE, AND METHOD THEREOF

#310
20090326963
2009-12-31

Audio encoding device, method, and program which controls the number of time groups in a frame using three successive time group energies

#311
20090326929
2009-12-31

Methods for improving high frequency reconstruction

#312
20090307294
2009-12-10

Conversion Between Sub-Band Field Representations for Time-Varying Filter Banks

#313
20090281811
2009-11-12

Transform coder and transform coding method

#314
20090276227
2009-11-05

Fast synthesis sub-band filtering method for digital signal decoding

#315
20090271204
2009-10-29

Audio compression

#316
20090248405
2009-10-01

Packet loss concealment for a sub-band predictive coder based on extrapolation of excitation waveform

#317
20090240505
2009-09-24

Audio decoding

#318
20090192806
2009-07-30

Broadband frequency translation for high frequency regeneration

#319
20090171673
2009-07-02

Encoding apparatus and encoding method

#320
20090157393
2009-06-18

Encoding device and decoding device

#321
20090154380
2009-06-18

Echo cancellation for a packet voice system

#322
20090138272
2009-05-28

Wideband audio signal coding/decoding device and method

#323
20090138271
2009-05-28

PARAMETRIC AUDIO CODING COMPRISING AMPLITUDE ENVELOPS

#324
20090132261
2009-05-21

Methods and apparatus for improving high frequency reconstruction of audio and speech signals

#325
20090083046
2009-03-26

Efficient coding of digital media spectral data using wide-sense perceptual similarity

#326
20090083042
2009-03-26

Encoding Method and Encoding Apparatus

#327
20090076829
2009-03-19

Device for perceptual weighting in audio encoding/decoding

#328
20090041111
2009-02-12

Spectral translation/folding in the subband domain

#329
20090024399
2009-01-22

Method and arrangements for audio signal encoding

#330
20090006081
2009-01-01

METHOD, MEDIUM AND APPARATUS FOR ENCODING AND/OR DECODING SIGNAL

#331
20080312759
2008-12-18

Flexible frequency and time partitioning in perceptual transform coding of audio

#332
20080281604
2008-11-13

METHOD AND APPARATUS TO ENCODE AND DECODE AN AUDIO SIGNAL

#333
20080228500
2008-09-18

METHOD AND APPARATUS FOR ENCODING/DECODING AUDIO SIGNAL CONTAINING NOISE AT LOW BIT RATE

#334
20080195383
2008-08-14

Embedded silence and background noise compression

#335
20080140425
2008-06-12

Audio encoding device, audio encoding method, and audio encoding program for encoding a wide-band audio signal

#336
20080126086
2008-05-29

Systems, methods, and apparatus for gain coding

#337
20080120118
2008-05-22

Method and apparatus for encoding and decoding high frequency signal

#338
20080091415
2008-04-17

System and method for canceling acoustic echoes in audio-conference communication systems

#339
20080059203
2008-03-06

Audio encoding device, decoding device, and method capable of flexibly adjusting the optimal trade-off between a code rate and sound quality

#340
20080040122
2008-02-14

Packet loss concealment for a sub-band predictive coder based on extrapolation of excitation waveform

#341
20080027709
2008-01-31

Determining scale factor values in encoding audio data with AAC

#342
20070296614
2007-12-27

Apparatus and method of wideband decoding to synthesize a decoded excitation signal with a generated high frequency band signal

#343
20070282603
2007-12-06

Methods and devices for switching between sound signal coding modes at a coder and for producing target signals at a decoder

#344
20070282599
2007-12-06

Method and apparatus to encode and/or decode signal using bandwidth extension technology

#345
20070265836
2007-11-15

Audio signal encoding apparatus and method

#346
20070238415
2007-10-11

Method and apparatus for audio encoding and decoding using wideband psychoacoustic modeling and bandwidth extension

#347
20070225971
2007-09-27

Methods and devices for low-frequency emphasis during audio compression based on ACELP/TCX

#348
20070174053
2007-07-26

Audio decoding using variable-length codebook application ranges

#349
20070174051
2007-07-26

Adaptive time and/or frequency-based encoding mode determination apparatus and method of determining encoding mode of the apparatus

#350
20070168186
2007-07-19

Audio coding apparatus, audio decoding apparatus, audio coding method and audio decoding method

#351
20070100612
2007-05-03

Partially complex modulated filter bank

#352
20070094035
2007-04-26

Audio coding

#353
20070094027
2007-04-26

Methods and apparatus for implementing embedded scalable encoding and decoding of companded and vector quantized audio data

#354
20070088558
2007-04-19

Systems, methods, and apparatus for split-band filtering and encoding of a wideband signal

#355
20070088542
2007-04-19

Systems, methods, and apparatus for wideband speech coding

#356
20070088541
2007-04-19

Systems, methods, and apparatus for highband burst suppression

#357
20070083376
2007-04-12

Synthesis subband filter process and apparatus

#358
20070078646
2007-04-05

METHOD AND APPARATUS TO ENCODE/DECODE AUDIO SIGNAL

#359
20070049196
2007-03-01

Method and system for optimized architecture for bluetooth streaming audio applications

#360
20070040709
2007-02-22

Scalable audio encoding and/or decoding method and apparatus

#361
20070033021
2007-02-08

Adjustment of scale factors in a perceptual audio coder based on cumulative total buffer space used and mean subband intensities

#362
20070016412
2007-01-18

Frequency segmentation to obtain bands for efficient coding of digital media

#363
20070005353
2007-01-04

Encoding device and decoding device

#364
20060287853
2006-12-21

Encoding device and decoding device

#365
20060282263
2006-12-14

Systems, methods, and apparatus for highband time warping

#366
20060282262
2006-12-14

Systems, methods, and apparatus for gain factor attenuation

#367
20060277042
2006-12-07

Systems, methods, and apparatus for anti-sparseness filtering

#368
20060277039
2006-12-07

Systems, methods, and apparatus for gain factor smoothing

#369
20060277038
2006-12-07

Systems, methods, and apparatus for highband excitation generation

#370
20060271356
2006-11-30

Systems, methods, and apparatus for quantization of spectral envelope representation

#371
20060265087
2006-11-23

Method and device for spectral reconstruction of an audio signal

#372
20060217975
2006-09-28

Band based audio coding and decoding apparatuses, methods, and recording media for scalability

#373
20060206314
2006-09-14

Adaptive variable bit rate audio compression encoding

#374
20060115092
2006-06-01

Encoding device and decoding device

#375
20060047523
2006-03-02

Processing of encoded signals

#376
20060031065
2006-02-09

Efficient spectral envelope coding using variable time/frequency resolution and time/frequency switching

#377
20060031064
2006-02-09

Efficient spectral envelope coding using variable time/frequency resolution and time/frequency switching

#378
20060015332
2006-01-19

Method, process and device for coding audio signals

#379
20060015328
2006-01-19

Sinusoidal audio coding

#380
20060004565
2006-01-05

Audio signal encoding device and storage medium for storing encoding program

#381
20050256723
2005-11-17

Efficient filter bank computation for audio coding

#382
20050213658
2005-09-29

Methods and system for encoding/decoding signals including scrambling spectral representation and downsampling

#383
20050165611
2005-07-28

Efficient coding of digital media spectral data using wide-sense perceptual similarity

#384
20050144006
2005-06-30

Digital audio watermark inserting/detecting apparatus and method

#385
20050102150
2005-05-12

SUBBAND ANALYSIS/SYNTHESIS FILTERING METHOD

#386
20050096917
2005-05-05

Methods for improving high frequency reconstruction

#387
20050096762
2005-05-05

Techniques for improving audio clarity and intelligibility at reduced bit rates over a digital network

#388
20050004793
2005-01-06

Signal adaptation for higher band coding in a codec utilizing band split coding