CA2177414A1 - Improved adaptive codebook-based speech compression system - Google Patents

Improved adaptive codebook-based speech compression system

Info

Publication number
CA2177414A1
CA2177414A1 CA2177414A CA2177414A CA2177414A1 CA 2177414 A1 CA2177414 A1 CA 2177414A1 CA 2177414 A CA2177414 A CA 2177414A CA 2177414 A CA2177414 A CA 2177414A CA 2177414 A1 CA2177414 A1 CA 2177414A1
Authority
CA
Canada
Prior art keywords
adaptive codebook
gain
pitch
pitch filter
filter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA2177414A
Other languages
French (fr)
Other versions
CA2177414C (en
Inventor
Peter Kroon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BlackBerry Ltd
Original Assignee
AT&T IPM Corp
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Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=23917151&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2177414(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by AT&T IPM Corp filed Critical AT&T IPM Corp
Publication of CA2177414A1 publication Critical patent/CA2177414A1/en
Application granted granted Critical
Publication of CA2177414C publication Critical patent/CA2177414C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—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
    • G10L19/04—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 predictive techniques
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/083—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being an excitation gain
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—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
    • G10L19/04—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 predictive techniques
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/09—Long term prediction, i.e. removing periodical redundancies, e.g. by using adaptive codebook or pitch predictor

Landscapes

  • Engineering & Computer Science (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

A speech coding system employing an adaptive codebook model of periodicity is augmented with a pitch-predictive filter (PPF). This PPF has a delay equal to the integer component of the pitch-period and a gain which is adaptive based on a measure ofperiodicity of the speech signal. In accordance with an embodiment of the present invention, speech processing systems which include a first portion comprising an adaptive codebook and corresponding adaptive codebook amplifier and a second portion comprising a fixed codebook coupled to a pitch filter, are adapted to delay the adaptive codebook gain; determine the pitch filter gain based on the delayed adaptive codebook gain, and amplify samples of a signal in the pitch filter based on said determined pitch filter gain. The adaptive codebook gain is delayed for one subframe. The pitch filter gain equals the delayed adaptive codebook gain, except when the adaptive codebook gain is either less than 0.2 or greater than 0.8., in which cases the pitch filter gain is set equal to 0.2 or 0.8, respectively.
CA002177414A 1995-06-07 1996-05-27 Improved adaptive codebook-based speech compression system Expired - Lifetime CA2177414C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/482,715 US5664055A (en) 1995-06-07 1995-06-07 CS-ACELP speech compression system with adaptive pitch prediction filter gain based on a measure of periodicity
US482,715 1995-06-07

Publications (2)

Publication Number Publication Date
CA2177414A1 true CA2177414A1 (en) 1996-12-08
CA2177414C CA2177414C (en) 2000-09-19

Family

ID=23917151

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002177414A Expired - Lifetime CA2177414C (en) 1995-06-07 1996-05-27 Improved adaptive codebook-based speech compression system

Country Status (8)

Country Link
US (1) US5664055A (en)
EP (1) EP0749110B1 (en)
JP (1) JP3272953B2 (en)
KR (1) KR100433608B1 (en)
AU (1) AU700205B2 (en)
CA (1) CA2177414C (en)
DE (1) DE69613910T2 (en)
ES (1) ES2163590T3 (en)

Families Citing this family (256)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2729246A1 (en) * 1995-01-06 1996-07-12 Matra Communication SYNTHETIC ANALYSIS-SPEECH CODING METHOD
GB9512284D0 (en) * 1995-06-16 1995-08-16 Nokia Mobile Phones Ltd Speech Synthesiser
JP3653826B2 (en) * 1995-10-26 2005-06-02 ソニー株式会社 Speech decoding method and apparatus
EP0773533B1 (en) * 1995-11-09 2000-04-26 Nokia Mobile Phones Ltd. Method of synthesizing a block of a speech signal in a CELP-type coder
US5819213A (en) * 1996-01-31 1998-10-06 Kabushiki Kaisha Toshiba Speech encoding and decoding with pitch filter range unrestricted by codebook range and preselecting, then increasing, search candidates from linear overlap codebooks
US6765904B1 (en) 1999-08-10 2004-07-20 Texas Instruments Incorporated Packet networks
CN1163870C (en) * 1996-08-02 2004-08-25 松下电器产业株式会社 Voice encoder, voice decoder, recording medium on which program for realizing voice encoding/decoding is recorded and mobile communication apparatus
US6192336B1 (en) 1996-09-30 2001-02-20 Apple Computer, Inc. Method and system for searching for an optimal codevector
US5794182A (en) * 1996-09-30 1998-08-11 Apple Computer, Inc. Linear predictive speech encoding systems with efficient combination pitch coefficients computation
TW326070B (en) * 1996-12-19 1998-02-01 Holtek Microelectronics Inc The estimation method of the impulse gain for coding vocoder
US6009395A (en) * 1997-01-02 1999-12-28 Texas Instruments Incorporated Synthesizer and method using scaled excitation signal
WO1998035341A2 (en) * 1997-02-10 1998-08-13 Koninklijke Philips Electronics N.V. Transmission system for transmitting speech signals
JP2000512036A (en) * 1997-02-10 2000-09-12 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Communication network for transmitting audio signals
JP3067676B2 (en) * 1997-02-13 2000-07-17 日本電気株式会社 Apparatus and method for predictive encoding of LSP
US5970444A (en) * 1997-03-13 1999-10-19 Nippon Telegraph And Telephone Corporation Speech coding method
KR100198476B1 (en) * 1997-04-23 1999-06-15 윤종용 Quantizer and the method of spectrum without noise
US6073092A (en) * 1997-06-26 2000-06-06 Telogy Networks, Inc. Method for speech coding based on a code excited linear prediction (CELP) model
US6266419B1 (en) * 1997-07-03 2001-07-24 At&T Corp. Custom character-coding compression for encoding and watermarking media content
US6240383B1 (en) * 1997-07-25 2001-05-29 Nec Corporation Celp speech coding and decoding system for creating comfort noise dependent on the spectral envelope of the speech signal
FI113571B (en) * 1998-03-09 2004-05-14 Nokia Corp speech Coding
JP3554566B2 (en) * 1998-05-27 2004-08-18 株式会社エヌ・ティ・ティ・ドコモ Audio decoder and audio decoding method
US6104992A (en) * 1998-08-24 2000-08-15 Conexant Systems, Inc. Adaptive gain reduction to produce fixed codebook target signal
US6385573B1 (en) * 1998-08-24 2002-05-07 Conexant Systems, Inc. Adaptive tilt compensation for synthesized speech residual
US7072832B1 (en) * 1998-08-24 2006-07-04 Mindspeed Technologies, Inc. System for speech encoding having an adaptive encoding arrangement
US6188981B1 (en) * 1998-09-18 2001-02-13 Conexant Systems, Inc. Method and apparatus for detecting voice activity in a speech signal
JP4550176B2 (en) * 1998-10-08 2010-09-22 株式会社東芝 Speech coding method
JP3343082B2 (en) * 1998-10-27 2002-11-11 松下電器産業株式会社 CELP speech encoder
CA2252170A1 (en) * 1998-10-27 2000-04-27 Bruno Bessette A method and device for high quality coding of wideband speech and audio signals
JP3180786B2 (en) 1998-11-27 2001-06-25 日本電気株式会社 Audio encoding method and audio encoding device
SE9903553D0 (en) * 1999-01-27 1999-10-01 Lars Liljeryd Enhancing conceptual performance of SBR and related coding methods by adaptive noise addition (ANA) and noise substitution limiting (NSL)
US6246978B1 (en) * 1999-05-18 2001-06-12 Mci Worldcom, Inc. Method and system for measurement of speech distortion from samples of telephonic voice signals
US6393394B1 (en) * 1999-07-19 2002-05-21 Qualcomm Incorporated Method and apparatus for interleaving line spectral information quantization methods in a speech coder
US6744757B1 (en) 1999-08-10 2004-06-01 Texas Instruments Incorporated Private branch exchange systems for packet communications
US6801532B1 (en) * 1999-08-10 2004-10-05 Texas Instruments Incorporated Packet reconstruction processes for packet communications
US6678267B1 (en) 1999-08-10 2004-01-13 Texas Instruments Incorporated Wireless telephone with excitation reconstruction of lost packet
US6801499B1 (en) * 1999-08-10 2004-10-05 Texas Instruments Incorporated Diversity schemes for packet communications
US6757256B1 (en) 1999-08-10 2004-06-29 Texas Instruments Incorporated Process of sending packets of real-time information
US6804244B1 (en) 1999-08-10 2004-10-12 Texas Instruments Incorporated Integrated circuits for packet communications
KR100391527B1 (en) * 1999-08-23 2003-07-12 마츠시타 덴끼 산교 가부시키가이샤 Voice encoder and voice encoding method
US6604070B1 (en) * 1999-09-22 2003-08-05 Conexant Systems, Inc. System of encoding and decoding speech signals
US6959274B1 (en) 1999-09-22 2005-10-25 Mindspeed Technologies, Inc. Fixed rate speech compression system and method
US6782360B1 (en) * 1999-09-22 2004-08-24 Mindspeed Technologies, Inc. Gain quantization for a CELP speech coder
US6574593B1 (en) * 1999-09-22 2003-06-03 Conexant Systems, Inc. Codebook tables for encoding and decoding
US6738733B1 (en) * 1999-09-30 2004-05-18 Stmicroelectronics Asia Pacific Pte Ltd. G.723.1 audio encoder
JP3478209B2 (en) * 1999-11-01 2003-12-15 日本電気株式会社 Audio signal decoding method and apparatus, audio signal encoding and decoding method and apparatus, and recording medium
CA2290037A1 (en) * 1999-11-18 2001-05-18 Voiceage Corporation Gain-smoothing amplifier device and method in codecs for wideband speech and audio signals
US7574351B2 (en) * 1999-12-14 2009-08-11 Texas Instruments Incorporated Arranging CELP information of one frame in a second packet
US20020016161A1 (en) * 2000-02-10 2002-02-07 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for compression of speech encoded parameters
US8645137B2 (en) 2000-03-16 2014-02-04 Apple Inc. Fast, language-independent method for user authentication by voice
US7010482B2 (en) * 2000-03-17 2006-03-07 The Regents Of The University Of California REW parametric vector quantization and dual-predictive SEW vector quantization for waveform interpolative coding
EP1303854A1 (en) * 2000-07-05 2003-04-23 Koninklijke Philips Electronics N.V. Method of calculating line spectral frequencies
HUP0003009A2 (en) * 2000-07-31 2002-08-28 Herterkom Gmbh Method for the compression of speech without any deterioration of quality
US6678651B2 (en) * 2000-09-15 2004-01-13 Mindspeed Technologies, Inc. Short-term enhancement in CELP speech coding
US6850884B2 (en) 2000-09-15 2005-02-01 Mindspeed Technologies, Inc. Selection of coding parameters based on spectral content of a speech signal
US7010480B2 (en) * 2000-09-15 2006-03-07 Mindspeed Technologies, Inc. Controlling a weighting filter based on the spectral content of a speech signal
US6842733B1 (en) 2000-09-15 2005-01-11 Mindspeed Technologies, Inc. Signal processing system for filtering spectral content of a signal for speech coding
US6937979B2 (en) * 2000-09-15 2005-08-30 Mindspeed Technologies, Inc. Coding based on spectral content of a speech signal
US7363219B2 (en) * 2000-09-22 2008-04-22 Texas Instruments Incorporated Hybrid speech coding and system
KR100566163B1 (en) * 2000-11-30 2006-03-29 마츠시타 덴끼 산교 가부시키가이샤 Audio decoder and audio decoding method
AU2002218501A1 (en) * 2000-11-30 2002-06-11 Matsushita Electric Industrial Co., Ltd. Vector quantizing device for lpc parameters
WO2002049218A1 (en) * 2000-12-14 2002-06-20 Sony Corporation Encoder and decoder
US6996523B1 (en) 2001-02-13 2006-02-07 Hughes Electronics Corporation Prototype waveform magnitude quantization for a frequency domain interpolative speech codec system
US7013269B1 (en) 2001-02-13 2006-03-14 Hughes Electronics Corporation Voicing measure for a speech CODEC system
US6931373B1 (en) 2001-02-13 2005-08-16 Hughes Electronics Corporation Prototype waveform phase modeling for a frequency domain interpolative speech codec system
US6766289B2 (en) * 2001-06-04 2004-07-20 Qualcomm Incorporated Fast code-vector searching
US7512535B2 (en) * 2001-10-03 2009-03-31 Broadcom Corporation Adaptive postfiltering methods and systems for decoding speech
ITFI20010199A1 (en) 2001-10-22 2003-04-22 Riccardo Vieri SYSTEM AND METHOD TO TRANSFORM TEXTUAL COMMUNICATIONS INTO VOICE AND SEND THEM WITH AN INTERNET CONNECTION TO ANY TELEPHONE SYSTEM
JP4108317B2 (en) * 2001-11-13 2008-06-25 日本電気株式会社 Code conversion method and apparatus, program, and storage medium
US7236928B2 (en) * 2001-12-19 2007-06-26 Ntt Docomo, Inc. Joint optimization of speech excitation and filter parameters
US20040002856A1 (en) * 2002-03-08 2004-01-01 Udaya Bhaskar Multi-rate frequency domain interpolative speech CODEC system
US20030216921A1 (en) * 2002-05-16 2003-11-20 Jianghua Bao Method and system for limited domain text to speech (TTS) processing
CA2388439A1 (en) * 2002-05-31 2003-11-30 Voiceage Corporation A method and device for efficient frame erasure concealment in linear predictive based speech codecs
EP1383109A1 (en) * 2002-07-17 2004-01-21 STMicroelectronics N.V. Method and device for wide band speech coding
EP1383110A1 (en) * 2002-07-17 2004-01-21 STMicroelectronics N.V. Method and device for wide band speech coding, particularly allowing for an improved quality of voised speech frames
US20040176950A1 (en) * 2003-03-04 2004-09-09 Docomo Communications Laboratories Usa, Inc. Methods and apparatuses for variable dimension vector quantization
KR100487719B1 (en) * 2003-03-05 2005-05-04 한국전자통신연구원 Quantizer of LSF coefficient vector in wide-band speech coding
KR100480341B1 (en) * 2003-03-13 2005-03-31 한국전자통신연구원 Apparatus for coding wide-band low bit rate speech signal
US7024358B2 (en) * 2003-03-15 2006-04-04 Mindspeed Technologies, Inc. Recovering an erased voice frame with time warping
EP1618557B1 (en) 2003-05-01 2007-07-25 Nokia Corporation Method and device for gain quantization in variable bit rate wideband speech coding
EP1496500B1 (en) * 2003-07-09 2007-02-28 Samsung Electronics Co., Ltd. Bitrate scalable speech coding and decoding apparatus and method
KR100668300B1 (en) * 2003-07-09 2007-01-12 삼성전자주식회사 Bitrate scalable speech coding and decoding apparatus and method thereof
US7668712B2 (en) * 2004-03-31 2010-02-23 Microsoft Corporation Audio encoding and decoding with intra frames and adaptive forward error correction
US7117147B2 (en) * 2004-07-28 2006-10-03 Motorola, Inc. Method and system for improving voice quality of a vocoder
US8265929B2 (en) * 2004-12-08 2012-09-11 Electronics And Telecommunications Research Institute Embedded code-excited linear prediction speech coding and decoding apparatus and method
DE102005000828A1 (en) 2005-01-05 2006-07-13 Siemens Ag Method for coding an analog signal
US7983922B2 (en) * 2005-04-15 2011-07-19 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Apparatus and method for generating multi-channel synthesizer control signal and apparatus and method for multi-channel synthesizing
US7707034B2 (en) * 2005-05-31 2010-04-27 Microsoft Corporation Audio codec post-filter
US7831421B2 (en) * 2005-05-31 2010-11-09 Microsoft Corporation Robust decoder
US7177804B2 (en) * 2005-05-31 2007-02-13 Microsoft Corporation Sub-band voice codec with multi-stage codebooks and redundant coding
US8677377B2 (en) 2005-09-08 2014-03-18 Apple Inc. Method and apparatus for building an intelligent automated assistant
US7633076B2 (en) 2005-09-30 2009-12-15 Apple Inc. Automated response to and sensing of user activity in portable devices
EP2051244A4 (en) * 2006-08-08 2010-04-14 Panasonic Corp Audio encoding device and audio encoding method
US9318108B2 (en) 2010-01-18 2016-04-19 Apple Inc. Intelligent automated assistant
SG166095A1 (en) * 2006-11-10 2010-11-29 Panasonic Corp Parameter decoding device, parameter encoding device, and parameter decoding method
EP2153439B1 (en) * 2007-02-21 2018-01-17 Telefonaktiebolaget LM Ericsson (publ) Double talk detector
JP5097219B2 (en) * 2007-03-02 2012-12-12 テレフオンアクチーボラゲット エル エム エリクソン（パブル） Non-causal post filter
US8977255B2 (en) 2007-04-03 2015-03-10 Apple Inc. Method and system for operating a multi-function portable electronic device using voice-activation
US9053089B2 (en) 2007-10-02 2015-06-09 Apple Inc. Part-of-speech tagging using latent analogy
US8620662B2 (en) 2007-11-20 2013-12-31 Apple Inc. Context-aware unit selection
US10002189B2 (en) 2007-12-20 2018-06-19 Apple Inc. Method and apparatus for searching using an active ontology
US9330720B2 (en) 2008-01-03 2016-05-03 Apple Inc. Methods and apparatus for altering audio output signals
US8065143B2 (en) 2008-02-22 2011-11-22 Apple Inc. Providing text input using speech data and non-speech data
US8996376B2 (en) 2008-04-05 2015-03-31 Apple Inc. Intelligent text-to-speech conversion
US10496753B2 (en) 2010-01-18 2019-12-03 Apple Inc. Automatically adapting user interfaces for hands-free interaction
US8464150B2 (en) 2008-06-07 2013-06-11 Apple Inc. Automatic language identification for dynamic text processing
US20100030549A1 (en) 2008-07-31 2010-02-04 Lee Michael M Mobile device having human language translation capability with positional feedback
US8768702B2 (en) 2008-09-05 2014-07-01 Apple Inc. Multi-tiered voice feedback in an electronic device
US8898568B2 (en) 2008-09-09 2014-11-25 Apple Inc. Audio user interface
US8712776B2 (en) 2008-09-29 2014-04-29 Apple Inc. Systems and methods for selective text to speech synthesis
US8583418B2 (en) 2008-09-29 2013-11-12 Apple Inc. Systems and methods of detecting language and natural language strings for text to speech synthesis
US8676904B2 (en) 2008-10-02 2014-03-18 Apple Inc. Electronic devices with voice command and contextual data processing capabilities
US9959870B2 (en) 2008-12-11 2018-05-01 Apple Inc. Speech recognition involving a mobile device
CN101604525B (en) * 2008-12-31 2011-04-06 华为技术有限公司 Pitch gain obtaining method, pitch gain obtaining device, coder and decoder
US8504378B2 (en) * 2009-01-22 2013-08-06 Panasonic Corporation Stereo acoustic signal encoding apparatus, stereo acoustic signal decoding apparatus, and methods for the same
US8862252B2 (en) 2009-01-30 2014-10-14 Apple Inc. Audio user interface for displayless electronic device
US8380507B2 (en) 2009-03-09 2013-02-19 Apple Inc. Systems and methods for determining the language to use for speech generated by a text to speech engine
US20120311585A1 (en) 2011-06-03 2012-12-06 Apple Inc. Organizing task items that represent tasks to perform
US10241644B2 (en) 2011-06-03 2019-03-26 Apple Inc. Actionable reminder entries
US9858925B2 (en) 2009-06-05 2018-01-02 Apple Inc. Using context information to facilitate processing of commands in a virtual assistant
US10241752B2 (en) 2011-09-30 2019-03-26 Apple Inc. Interface for a virtual digital assistant
US10540976B2 (en) 2009-06-05 2020-01-21 Apple Inc. Contextual voice commands
US9431006B2 (en) 2009-07-02 2016-08-30 Apple Inc. Methods and apparatuses for automatic speech recognition
US8682649B2 (en) 2009-11-12 2014-03-25 Apple Inc. Sentiment prediction from textual data
US8600743B2 (en) 2010-01-06 2013-12-03 Apple Inc. Noise profile determination for voice-related feature
US8381107B2 (en) 2010-01-13 2013-02-19 Apple Inc. Adaptive audio feedback system and method
US8311838B2 (en) 2010-01-13 2012-11-13 Apple Inc. Devices and methods for identifying a prompt corresponding to a voice input in a sequence of prompts
US10276170B2 (en) 2010-01-18 2019-04-30 Apple Inc. Intelligent automated assistant
US10705794B2 (en) 2010-01-18 2020-07-07 Apple Inc. Automatically adapting user interfaces for hands-free interaction
US10679605B2 (en) 2010-01-18 2020-06-09 Apple Inc. Hands-free list-reading by intelligent automated assistant
US10553209B2 (en) 2010-01-18 2020-02-04 Apple Inc. Systems and methods for hands-free notification summaries
DE202011111062U1 (en) 2010-01-25 2019-02-19 Newvaluexchange Ltd. Device and system for a digital conversation management platform
US8682667B2 (en) 2010-02-25 2014-03-25 Apple Inc. User profiling for selecting user specific voice input processing information
JP5850216B2 (en) 2010-04-13 2016-02-03 ソニー株式会社 Signal processing apparatus and method, encoding apparatus and method, decoding apparatus and method, and program
US8542766B2 (en) * 2010-05-04 2013-09-24 Samsung Electronics Co., Ltd. Time alignment algorithm for transmitters with EER/ET amplifiers and others
IL311020A (en) 2010-07-02 2024-04-01 Dolby Int Ab Selective bass post filter
US8713021B2 (en) 2010-07-07 2014-04-29 Apple Inc. Unsupervised document clustering using latent semantic density analysis
US8719006B2 (en) 2010-08-27 2014-05-06 Apple Inc. Combined statistical and rule-based part-of-speech tagging for text-to-speech synthesis
US8719014B2 (en) 2010-09-27 2014-05-06 Apple Inc. Electronic device with text error correction based on voice recognition data
US8738385B2 (en) * 2010-10-20 2014-05-27 Broadcom Corporation Pitch-based pre-filtering and post-filtering for compression of audio signals
US10515147B2 (en) 2010-12-22 2019-12-24 Apple Inc. Using statistical language models for contextual lookup
US10762293B2 (en) 2010-12-22 2020-09-01 Apple Inc. Using parts-of-speech tagging and named entity recognition for spelling correction
US8781836B2 (en) 2011-02-22 2014-07-15 Apple Inc. Hearing assistance system for providing consistent human speech
US9262612B2 (en) 2011-03-21 2016-02-16 Apple Inc. Device access using voice authentication
US10057736B2 (en) 2011-06-03 2018-08-21 Apple Inc. Active transport based notifications
US10672399B2 (en) 2011-06-03 2020-06-02 Apple Inc. Switching between text data and audio data based on a mapping
US8812294B2 (en) 2011-06-21 2014-08-19 Apple Inc. Translating phrases from one language into another using an order-based set of declarative rules
US8706472B2 (en) 2011-08-11 2014-04-22 Apple Inc. Method for disambiguating multiple readings in language conversion
US8994660B2 (en) 2011-08-29 2015-03-31 Apple Inc. Text correction processing
US8762156B2 (en) 2011-09-28 2014-06-24 Apple Inc. Speech recognition repair using contextual information
US10134385B2 (en) 2012-03-02 2018-11-20 Apple Inc. Systems and methods for name pronunciation
US9483461B2 (en) 2012-03-06 2016-11-01 Apple Inc. Handling speech synthesis of content for multiple languages
EP2830062B1 (en) 2012-03-21 2019-11-20 Samsung Electronics Co., Ltd. Method and apparatus for high-frequency encoding/decoding for bandwidth extension
ES2960582T3 (en) * 2012-03-29 2024-03-05 Ericsson Telefon Ab L M Vector quantifier
US9070356B2 (en) * 2012-04-04 2015-06-30 Google Technology Holdings LLC Method and apparatus for generating a candidate code-vector to code an informational signal
US9263053B2 (en) * 2012-04-04 2016-02-16 Google Technology Holdings LLC Method and apparatus for generating a candidate code-vector to code an informational signal
US9280610B2 (en) 2012-05-14 2016-03-08 Apple Inc. Crowd sourcing information to fulfill user requests
US8775442B2 (en) 2012-05-15 2014-07-08 Apple Inc. Semantic search using a single-source semantic model
US10417037B2 (en) 2012-05-15 2019-09-17 Apple Inc. Systems and methods for integrating third party services with a digital assistant
WO2013185109A2 (en) 2012-06-08 2013-12-12 Apple Inc. Systems and methods for recognizing textual identifiers within a plurality of words
US9721563B2 (en) 2012-06-08 2017-08-01 Apple Inc. Name recognition system
US9495129B2 (en) 2012-06-29 2016-11-15 Apple Inc. Device, method, and user interface for voice-activated navigation and browsing of a document
US9576574B2 (en) 2012-09-10 2017-02-21 Apple Inc. Context-sensitive handling of interruptions by intelligent digital assistant
US9547647B2 (en) 2012-09-19 2017-01-17 Apple Inc. Voice-based media searching
US8935167B2 (en) 2012-09-25 2015-01-13 Apple Inc. Exemplar-based latent perceptual modeling for automatic speech recognition
ES2626977T3 (en) * 2013-01-29 2017-07-26 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus, procedure and computer medium to synthesize an audio signal
US10199051B2 (en) 2013-02-07 2019-02-05 Apple Inc. Voice trigger for a digital assistant
US10642574B2 (en) 2013-03-14 2020-05-05 Apple Inc. Device, method, and graphical user interface for outputting captions
US10572476B2 (en) 2013-03-14 2020-02-25 Apple Inc. Refining a search based on schedule items
US9368114B2 (en) 2013-03-14 2016-06-14 Apple Inc. Context-sensitive handling of interruptions
US9733821B2 (en) 2013-03-14 2017-08-15 Apple Inc. Voice control to diagnose inadvertent activation of accessibility features
US9977779B2 (en) 2013-03-14 2018-05-22 Apple Inc. Automatic supplementation of word correction dictionaries
US10652394B2 (en) 2013-03-14 2020-05-12 Apple Inc. System and method for processing voicemail
KR102057795B1 (en) 2013-03-15 2019-12-19 애플 인크. Context-sensitive handling of interruptions
CN105027197B (en) 2013-03-15 2018-12-14 苹果公司 Training at least partly voice command system
CN110096712B (en) 2013-03-15 2023-06-20 苹果公司 User training through intelligent digital assistant
US10748529B1 (en) 2013-03-15 2020-08-18 Apple Inc. Voice activated device for use with a voice-based digital assistant
WO2014144579A1 (en) 2013-03-15 2014-09-18 Apple Inc. System and method for updating an adaptive speech recognition model
WO2014197336A1 (en) 2013-06-07 2014-12-11 Apple Inc. System and method for detecting errors in interactions with a voice-based digital assistant
US9582608B2 (en) 2013-06-07 2017-02-28 Apple Inc. Unified ranking with entropy-weighted information for phrase-based semantic auto-completion
WO2014197334A2 (en) 2013-06-07 2014-12-11 Apple Inc. System and method for user-specified pronunciation of words for speech synthesis and recognition
WO2014197335A1 (en) 2013-06-08 2014-12-11 Apple Inc. Interpreting and acting upon commands that involve sharing information with remote devices
CN110442699A (en) 2013-06-09 2019-11-12 苹果公司 Operate method, computer-readable medium, electronic equipment and the system of digital assistants
US10176167B2 (en) 2013-06-09 2019-01-08 Apple Inc. System and method for inferring user intent from speech inputs
KR101809808B1 (en) 2013-06-13 2017-12-15 애플 인크. System and method for emergency calls initiated by voice command
DE112014003653B4 (en) 2013-08-06 2024-04-18 Apple Inc. Automatically activate intelligent responses based on activities from remote devices
US10296160B2 (en) 2013-12-06 2019-05-21 Apple Inc. Method for extracting salient dialog usage from live data
RU2764260C2 (en) * 2013-12-27 2022-01-14 Сони Корпорейшн Decoding device and method
CN105023577B (en) * 2014-04-17 2019-07-05 腾讯科技（深圳）有限公司 Mixed audio processing method, device and system
CN107452391B (en) 2014-04-29 2020-08-25 华为技术有限公司 Audio coding method and related device
US9620105B2 (en) 2014-05-15 2017-04-11 Apple Inc. Analyzing audio input for efficient speech and music recognition
US10592095B2 (en) 2014-05-23 2020-03-17 Apple Inc. Instantaneous speaking of content on touch devices
US9502031B2 (en) 2014-05-27 2016-11-22 Apple Inc. Method for supporting dynamic grammars in WFST-based ASR
US9633004B2 (en) 2014-05-30 2017-04-25 Apple Inc. Better resolution when referencing to concepts
US10078631B2 (en) 2014-05-30 2018-09-18 Apple Inc. Entropy-guided text prediction using combined word and character n-gram language models
US9715875B2 (en) 2014-05-30 2017-07-25 Apple Inc. Reducing the need for manual start/end-pointing and trigger phrases
US10289433B2 (en) 2014-05-30 2019-05-14 Apple Inc. Domain specific language for encoding assistant dialog
US9785630B2 (en) 2014-05-30 2017-10-10 Apple Inc. Text prediction using combined word N-gram and unigram language models
US9430463B2 (en) 2014-05-30 2016-08-30 Apple Inc. Exemplar-based natural language processing
EP3480811A1 (en) 2014-05-30 2019-05-08 Apple Inc. Multi-command single utterance input method
US9734193B2 (en) 2014-05-30 2017-08-15 Apple Inc. Determining domain salience ranking from ambiguous words in natural speech
US9842101B2 (en) 2014-05-30 2017-12-12 Apple Inc. Predictive conversion of language input
US9760559B2 (en) 2014-05-30 2017-09-12 Apple Inc. Predictive text input
US10170123B2 (en) 2014-05-30 2019-01-01 Apple Inc. Intelligent assistant for home automation
US10659851B2 (en) 2014-06-30 2020-05-19 Apple Inc. Real-time digital assistant knowledge updates
US9338493B2 (en) 2014-06-30 2016-05-10 Apple Inc. Intelligent automated assistant for TV user interactions
US10446141B2 (en) 2014-08-28 2019-10-15 Apple Inc. Automatic speech recognition based on user feedback
US9818400B2 (en) 2014-09-11 2017-11-14 Apple Inc. Method and apparatus for discovering trending terms in speech requests
US10789041B2 (en) 2014-09-12 2020-09-29 Apple Inc. Dynamic thresholds for always listening speech trigger
US9646609B2 (en) 2014-09-30 2017-05-09 Apple Inc. Caching apparatus for serving phonetic pronunciations
US10127911B2 (en) 2014-09-30 2018-11-13 Apple Inc. Speaker identification and unsupervised speaker adaptation techniques
US9668121B2 (en) 2014-09-30 2017-05-30 Apple Inc. Social reminders
US9886432B2 (en) 2014-09-30 2018-02-06 Apple Inc. Parsimonious handling of word inflection via categorical stem + suffix N-gram language models
US10074360B2 (en) 2014-09-30 2018-09-11 Apple Inc. Providing an indication of the suitability of speech recognition
US10552013B2 (en) 2014-12-02 2020-02-04 Apple Inc. Data detection
US9711141B2 (en) 2014-12-09 2017-07-18 Apple Inc. Disambiguating heteronyms in speech synthesis
US9865280B2 (en) 2015-03-06 2018-01-09 Apple Inc. Structured dictation using intelligent automated assistants
US10567477B2 (en) 2015-03-08 2020-02-18 Apple Inc. Virtual assistant continuity
US9886953B2 (en) 2015-03-08 2018-02-06 Apple Inc. Virtual assistant activation
US9721566B2 (en) 2015-03-08 2017-08-01 Apple Inc. Competing devices responding to voice triggers
US9899019B2 (en) 2015-03-18 2018-02-20 Apple Inc. Systems and methods for structured stem and suffix language models
US9842105B2 (en) 2015-04-16 2017-12-12 Apple Inc. Parsimonious continuous-space phrase representations for natural language processing
US10083688B2 (en) 2015-05-27 2018-09-25 Apple Inc. Device voice control for selecting a displayed affordance
US10127220B2 (en) 2015-06-04 2018-11-13 Apple Inc. Language identification from short strings
US10101822B2 (en) 2015-06-05 2018-10-16 Apple Inc. Language input correction
US10186254B2 (en) 2015-06-07 2019-01-22 Apple Inc. Context-based endpoint detection
US11025565B2 (en) 2015-06-07 2021-06-01 Apple Inc. Personalized prediction of responses for instant messaging
US10255907B2 (en) 2015-06-07 2019-04-09 Apple Inc. Automatic accent detection using acoustic models
US10747498B2 (en) 2015-09-08 2020-08-18 Apple Inc. Zero latency digital assistant
US10671428B2 (en) 2015-09-08 2020-06-02 Apple Inc. Distributed personal assistant
US9697820B2 (en) 2015-09-24 2017-07-04 Apple Inc. Unit-selection text-to-speech synthesis using concatenation-sensitive neural networks
US10366158B2 (en) 2015-09-29 2019-07-30 Apple Inc. Efficient word encoding for recurrent neural network language models
US11010550B2 (en) 2015-09-29 2021-05-18 Apple Inc. Unified language modeling framework for word prediction, auto-completion and auto-correction
US11587559B2 (en) 2015-09-30 2023-02-21 Apple Inc. Intelligent device identification
US10691473B2 (en) 2015-11-06 2020-06-23 Apple Inc. Intelligent automated assistant in a messaging environment
US10049668B2 (en) 2015-12-02 2018-08-14 Apple Inc. Applying neural network language models to weighted finite state transducers for automatic speech recognition
US10223066B2 (en) 2015-12-23 2019-03-05 Apple Inc. Proactive assistance based on dialog communication between devices
US10446143B2 (en) 2016-03-14 2019-10-15 Apple Inc. Identification of voice inputs providing credentials
US10251002B2 (en) * 2016-03-21 2019-04-02 Starkey Laboratories, Inc. Noise characterization and attenuation using linear predictive coding
US9934775B2 (en) 2016-05-26 2018-04-03 Apple Inc. Unit-selection text-to-speech synthesis based on predicted concatenation parameters
US9972304B2 (en) 2016-06-03 2018-05-15 Apple Inc. Privacy preserving distributed evaluation framework for embedded personalized systems
US10249300B2 (en) 2016-06-06 2019-04-02 Apple Inc. Intelligent list reading
US10049663B2 (en) 2016-06-08 2018-08-14 Apple, Inc. Intelligent automated assistant for media exploration
DK179309B1 (en) 2016-06-09 2018-04-23 Apple Inc Intelligent automated assistant in a home environment
US10067938B2 (en) 2016-06-10 2018-09-04 Apple Inc. Multilingual word prediction
US10192552B2 (en) 2016-06-10 2019-01-29 Apple Inc. Digital assistant providing whispered speech
US10490187B2 (en) 2016-06-10 2019-11-26 Apple Inc. Digital assistant providing automated status report
US10509862B2 (en) 2016-06-10 2019-12-17 Apple Inc. Dynamic phrase expansion of language input
US10586535B2 (en) 2016-06-10 2020-03-10 Apple Inc. Intelligent digital assistant in a multi-tasking environment
DK201670540A1 (en) 2016-06-11 2018-01-08 Apple Inc Application integration with a digital assistant
DK179415B1 (en) 2016-06-11 2018-06-14 Apple Inc Intelligent device arbitration and control
DK179343B1 (en) 2016-06-11 2018-05-14 Apple Inc Intelligent task discovery
DK179049B1 (en) 2016-06-11 2017-09-18 Apple Inc Data driven natural language event detection and classification
US10593346B2 (en) 2016-12-22 2020-03-17 Apple Inc. Rank-reduced token representation for automatic speech recognition
DK179745B1 (en) 2017-05-12 2019-05-01 Apple Inc. SYNCHRONIZATION AND TASK DELEGATION OF A DIGITAL ASSISTANT
DK201770431A1 (en) 2017-05-15 2018-12-20 Apple Inc. Optimizing dialogue policy decisions for digital assistants using implicit feedback
AU2020205729A1 (en) 2019-01-13 2021-08-05 Huawei Technologies Co., Ltd. High resolution audio coding

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05289700A (en) * 1992-04-09 1993-11-05 Olympus Optical Co Ltd Voice encoding device
DE69328450T2 (en) * 1992-06-29 2001-01-18 Nippon Telegraph & Telephone Method and device for speech coding

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