JPH06506544A - 音声コーディングにおけるダブルモード長期予測 - Google Patents
音声コーディングにおけるダブルモード長期予測Info
- Publication number
- JPH06506544A JPH06506544A JP5513132A JP51313293A JPH06506544A JP H06506544 A JPH06506544 A JP H06506544A JP 5513132 A JP5513132 A JP 5513132A JP 51313293 A JP51313293 A JP 51313293A JP H06506544 A JPH06506544 A JP H06506544A
- Authority
- JP
- Japan
- Prior art keywords
- estimate
- vector
- long
- knee
- gain
- 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
Links
- 230000007774 longterm Effects 0.000 title claims description 31
- 239000013598 vector Substances 0.000 claims description 79
- 238000004458 analytical method Methods 0.000 claims description 53
- 238000000034 method Methods 0.000 claims description 32
- 230000005284 excitation Effects 0.000 claims description 23
- 230000003044 adaptive effect Effects 0.000 claims description 17
- 230000015572 biosynthetic process Effects 0.000 claims description 16
- 238000003786 synthesis reaction Methods 0.000 claims description 16
- 239000000523 sample Substances 0.000 claims 2
- 210000003127 knee Anatomy 0.000 description 59
- 229940075591 dalay Drugs 0.000 description 10
- 230000005236 sound signal Effects 0.000 description 10
- 239000011295 pitch Substances 0.000 description 8
- 239000002131 composite material Substances 0.000 description 7
- 238000005457 optimization Methods 0.000 description 6
- 238000013139 quantization Methods 0.000 description 5
- 238000004364 calculation method Methods 0.000 description 4
- 230000003111 delayed effect Effects 0.000 description 4
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- 241001655798 Taku Species 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
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- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000002123 temporal effect Effects 0.000 description 2
- 206010001497 Agitation Diseases 0.000 description 1
- 241000796385 Choreutis chi Species 0.000 description 1
- 101000998897 Homo sapiens Serine protease HTRA3 Proteins 0.000 description 1
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- 235000002899 Mentha suaveolens Nutrition 0.000 description 1
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- 101100491995 Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987) aro-1 gene Proteins 0.000 description 1
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- 102100033197 Serine protease HTRA3 Human genes 0.000 description 1
- 241001504592 Trachurus trachurus Species 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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- 238000000576 coating method Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
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Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; 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
- G10L19/12—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a code excitation, e.g. in code excited linear prediction [CELP] vocoders
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; 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
- G10L2019/0001—Codebooks
- G10L2019/0004—Design or structure of the codebook
- G10L2019/0005—Multi-stage vector quantisation
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; 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
- G10L2019/0001—Codebooks
- G10L2019/0011—Long term prediction filters, i.e. pitch estimation
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
Description
Claims (7)
- 1.固定コードブック(12)からのコードベクトルと長期予測子ベクトルとの 線形組合わせを含む最適励起ベクトルを形成することによって、合成による分析 においてサンプル音声信号ベクトル(s(n))をコーディングする方法であっ て、 (a)開ループ分析(22、24、30、32、34、36)において前記長期 予測子ベクトルの第1推定を形成することと、 (b)閉ループ分析(gL、14、16、20、22、24、28、34、36 )において前記長期予測子ベクトルの第2推定を形成することと、(c)前記音 声信号ベクトル(s(n))の最良コーディングを与える励起ベクトルを形成す るために前記第1推定と前記第2推定との各々を前記固定コードブック(12) 内の全ての前記コードベクトルと全数探索において線形的に組み合わせることと 、 を特徴とする方法。
- 2.請求の範囲第1項記載の方法であって、1つかつ同じフィルタ(28、gL )内でステップ(c)において前記長期予測子ベクトルの前記第1推定と前記第 2推定とを形成することを特徴とする方法。
- 3.請求の範囲第1項記載の方法であって、ステップ(c)における前記長期予 測子ベクトルの第1推定と第2推定は1つのかつ同じ適応コードブック(10) に記憶されかつ該ブック(10)から検索されることを特徴とする方法。
- 4.請求の範囲第1項から第3項のうちいずれか1つに記載の方法であって、前 記長期予測子ベクトルの前記第1推定と前記第2推定とは高分解能予測子によっ て形成されることを特徴とする方法。
- 5.請求の範囲第1項から第4項のうちいずれか1つに記載の方法であって、前 記長期予測子ベクトルの前記第1推定と前記第2推定はp>1の順位を持つ予測 子によって形成されることを特徴とする方法。
- 6.請求の範囲第2項、第4項及び第5項のうちいずれか1つに記載の方法であ って、前記第1推定と前記第2推定とは、量子化利得係数の組から選択された利 得係数(gL)を乗せられることを特徴とする方法。
- 7.請求の範囲第1項か第6項のうちいずれか1つに記載の方法であって、前記 第1推定と前記第2推定とは各々特性遅延(L)を示すことと、前記第2推定の 遅延は前記第1推定の遅延の回りの区間内で探索されかつ前記第1推定の前記遅 延の倍数又は約数であることとを特徴とする方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9200217A SE469764B (sv) | 1992-01-27 | 1992-01-27 | Saett att koda en samplad talsignalvektor |
SE9200217-9 | 1992-01-27 | ||
PCT/SE1993/000024 WO1993015503A1 (en) | 1992-01-27 | 1993-01-19 | Double mode long term prediction in speech coding |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH06506544A true JPH06506544A (ja) | 1994-07-21 |
JP3073017B2 JP3073017B2 (ja) | 2000-08-07 |
Family
ID=20385120
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP05513132A Expired - Lifetime JP3073017B2 (ja) | 1992-01-27 | 1993-01-19 | 音声コーディングにおけるダブルモード長期予測 |
Country Status (15)
Country | Link |
---|---|
US (1) | US5553191A (ja) |
EP (1) | EP0577809B1 (ja) |
JP (1) | JP3073017B2 (ja) |
AU (1) | AU658053B2 (ja) |
BR (1) | BR9303964A (ja) |
CA (1) | CA2106390A1 (ja) |
DE (1) | DE69314389T2 (ja) |
DK (1) | DK0577809T3 (ja) |
ES (1) | ES2110595T3 (ja) |
FI (1) | FI934063A0 (ja) |
HK (1) | HK1003346A1 (ja) |
MX (1) | MX9300401A (ja) |
SE (1) | SE469764B (ja) |
TW (1) | TW227609B (ja) |
WO (1) | WO1993015503A1 (ja) |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI95086C (fi) * | 1992-11-26 | 1995-12-11 | Nokia Mobile Phones Ltd | Menetelmä puhesignaalin tehokkaaksi koodaamiseksi |
MX9603122A (es) * | 1994-02-01 | 1997-03-29 | Qualcomm Inc | Prediccion lineal excitada por rafaga. |
GB9408037D0 (en) * | 1994-04-22 | 1994-06-15 | Philips Electronics Uk Ltd | Analogue signal coder |
US7133835B1 (en) * | 1995-08-08 | 2006-11-07 | Cxn, Inc. | Online exchange market system with a buyer auction and a seller auction |
US6765904B1 (en) | 1999-08-10 | 2004-07-20 | Texas Instruments Incorporated | Packet networks |
US5799272A (en) * | 1996-07-01 | 1998-08-25 | Ess Technology, Inc. | Switched multiple sequence excitation model for low bit rate speech compression |
JP3357795B2 (ja) * | 1996-08-16 | 2002-12-16 | 株式会社東芝 | 音声符号化方法および装置 |
FI964975A (fi) * | 1996-12-12 | 1998-06-13 | Nokia Mobile Phones Ltd | Menetelmä ja laite puheen koodaamiseksi |
US6068630A (en) * | 1997-01-02 | 2000-05-30 | St. Francis Medical Technologies, Inc. | Spine distraction implant |
US7072832B1 (en) | 1998-08-24 | 2006-07-04 | Mindspeed Technologies, Inc. | System for speech encoding having an adaptive encoding arrangement |
SE519563C2 (sv) * | 1998-09-16 | 2003-03-11 | Ericsson Telefon Ab L M | Förfarande och kodare för linjär prediktiv analys-genom- synteskodning |
US6744757B1 (en) | 1999-08-10 | 2004-06-01 | Texas Instruments Incorporated | Private branch exchange systems for packet communications |
US6804244B1 (en) | 1999-08-10 | 2004-10-12 | Texas Instruments Incorporated | Integrated circuits for packet communications |
US6801532B1 (en) * | 1999-08-10 | 2004-10-05 | Texas Instruments Incorporated | Packet reconstruction processes for packet communications |
US6801499B1 (en) * | 1999-08-10 | 2004-10-05 | Texas Instruments Incorporated | Diversity schemes for packet communications |
US6678267B1 (en) | 1999-08-10 | 2004-01-13 | Texas Instruments Incorporated | Wireless telephone with excitation reconstruction of lost packet |
US6757256B1 (en) | 1999-08-10 | 2004-06-29 | Texas Instruments Incorporated | Process of sending packets of real-time information |
US7574351B2 (en) * | 1999-12-14 | 2009-08-11 | Texas Instruments Incorporated | Arranging CELP information of one frame in a second packet |
US7103538B1 (en) * | 2002-06-10 | 2006-09-05 | Mindspeed Technologies, Inc. | Fixed code book with embedded adaptive code book |
FI118835B (fi) * | 2004-02-23 | 2008-03-31 | Nokia Corp | Koodausmallin valinta |
US9058812B2 (en) * | 2005-07-27 | 2015-06-16 | Google Technology Holdings LLC | Method and system for coding an information signal using pitch delay contour adjustment |
EP2077551B1 (en) | 2008-01-04 | 2011-03-02 | Dolby Sweden AB | Audio encoder and decoder |
WO2012008891A1 (en) * | 2010-07-16 | 2012-01-19 | Telefonaktiebolaget L M Ericsson (Publ) | Audio encoder and decoder and methods for encoding and decoding an audio signal |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL8500843A (nl) * | 1985-03-22 | 1986-10-16 | Koninkl Philips Electronics Nv | Multipuls-excitatie lineair-predictieve spraakcoder. |
US4868867A (en) * | 1987-04-06 | 1989-09-19 | Voicecraft Inc. | Vector excitation speech or audio coder for transmission or storage |
US5359696A (en) * | 1988-06-28 | 1994-10-25 | Motorola Inc. | Digital speech coder having improved sub-sample resolution long-term predictor |
US5097508A (en) * | 1989-08-31 | 1992-03-17 | Codex Corporation | Digital speech coder having improved long term lag parameter determination |
CA2051304C (en) * | 1990-09-18 | 1996-03-05 | Tomohiko Taniguchi | Speech coding and decoding system |
US5271089A (en) * | 1990-11-02 | 1993-12-14 | Nec Corporation | Speech parameter encoding method capable of transmitting a spectrum parameter at a reduced number of bits |
ATE477571T1 (de) * | 1991-06-11 | 2010-08-15 | Qualcomm Inc | Vocoder mit veränderlicher bitrate |
US5233660A (en) * | 1991-09-10 | 1993-08-03 | At&T Bell Laboratories | Method and apparatus for low-delay celp speech coding and decoding |
-
1992
- 1992-01-27 SE SE9200217A patent/SE469764B/sv not_active IP Right Cessation
-
1993
- 1993-01-13 TW TW082100183A patent/TW227609B/zh active
- 1993-01-19 BR BR9303964A patent/BR9303964A/pt not_active IP Right Cessation
- 1993-01-19 JP JP05513132A patent/JP3073017B2/ja not_active Expired - Lifetime
- 1993-01-19 DE DE69314389T patent/DE69314389T2/de not_active Expired - Lifetime
- 1993-01-19 EP EP93903357A patent/EP0577809B1/en not_active Expired - Lifetime
- 1993-01-19 AU AU34651/93A patent/AU658053B2/en not_active Ceased
- 1993-01-19 CA CA002106390A patent/CA2106390A1/en not_active Abandoned
- 1993-01-19 ES ES93903357T patent/ES2110595T3/es not_active Expired - Lifetime
- 1993-01-19 WO PCT/SE1993/000024 patent/WO1993015503A1/en active IP Right Grant
- 1993-01-19 DK DK93903357.7T patent/DK0577809T3/da active
- 1993-01-26 US US08/009,245 patent/US5553191A/en not_active Expired - Lifetime
- 1993-01-26 MX MX9300401A patent/MX9300401A/es not_active IP Right Cessation
- 1993-09-16 FI FI934063A patent/FI934063A0/fi unknown
-
1998
- 1998-03-20 HK HK98102397A patent/HK1003346A1/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
JP3073017B2 (ja) | 2000-08-07 |
ES2110595T3 (es) | 1998-02-16 |
DE69314389D1 (de) | 1997-11-13 |
US5553191A (en) | 1996-09-03 |
MX9300401A (es) | 1993-07-01 |
AU658053B2 (en) | 1995-03-30 |
BR9303964A (pt) | 1994-08-02 |
SE469764B (sv) | 1993-09-06 |
CA2106390A1 (en) | 1993-07-28 |
WO1993015503A1 (en) | 1993-08-05 |
FI934063A (fi) | 1993-09-16 |
SE9200217D0 (sv) | 1992-01-27 |
AU3465193A (en) | 1993-09-01 |
DE69314389T2 (de) | 1998-02-05 |
EP0577809B1 (en) | 1997-10-08 |
FI934063A0 (fi) | 1993-09-16 |
DK0577809T3 (da) | 1998-05-25 |
EP0577809A1 (en) | 1994-01-12 |
SE9200217L (sv) | 1993-07-28 |
HK1003346A1 (en) | 1998-10-23 |
TW227609B (ja) | 1994-08-01 |
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