FI117993B - Menetelmä ja laite koodausnopeuden valitsemiseksi muuttuvanopeuksisessa vokooderissa - Google Patents
Menetelmä ja laite koodausnopeuden valitsemiseksi muuttuvanopeuksisessa vokooderissa Download PDFInfo
- Publication number
- FI117993B FI117993B FI961112A FI961112A FI117993B FI 117993 B FI117993 B FI 117993B FI 961112 A FI961112 A FI 961112A FI 961112 A FI961112 A FI 961112A FI 117993 B FI117993 B FI 117993B
- Authority
- FI
- Finland
- Prior art keywords
- rate
- subband
- threshold
- subband power
- power values
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000005236 sound signal Effects 0.000 claims description 13
- 238000005311 autocorrelation function Methods 0.000 claims description 11
- 238000004364 calculation method Methods 0.000 claims description 11
- 206010019133 Hangover Diseases 0.000 abstract description 3
- 230000001419 dependent effect Effects 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 7
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 241000282344 Mellivora capensis Species 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 230000000737 periodic effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
- 238000010187 selection method Methods 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
Classifications
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- 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
- G10L19/02—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
-
- 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
- G10L19/02—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
- G10L19/0204—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
- G10L19/0208—Subband 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
- G10L19/02—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
- G10L19/0204—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
-
- 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
- G10L19/16—Vocoder architecture
- G10L19/18—Vocoders using multiple modes
- G10L19/22—Mode decision, i.e. based on audio signal content versus external parameters
-
- 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
- G10L19/16—Vocoder architecture
- G10L19/18—Vocoders using multiple modes
- G10L19/24—Variable rate codecs, e.g. for generating different qualities using a scalable representation such as hierarchical encoding or layered encoding
-
- 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
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
-
- 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
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/78—Detection of presence or absence of voice signals
-
- 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
- G10L19/10—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a multipulse excitation
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Computational Linguistics (AREA)
- Signal Processing (AREA)
- Quality & Reliability (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
- Dc Digital Transmission (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/288,413 US5742734A (en) | 1994-08-10 | 1994-08-10 | Encoding rate selection in a variable rate vocoder |
US28841394 | 1994-08-10 | ||
US9509830 | 1995-08-01 | ||
PCT/US1995/009830 WO1996005592A1 (en) | 1994-08-10 | 1995-08-01 | Method and apparatus for selecting an encoding rate in a variable rate vocoder |
Publications (3)
Publication Number | Publication Date |
---|---|
FI961112A0 FI961112A0 (fi) | 1996-03-08 |
FI961112A FI961112A (fi) | 1996-04-12 |
FI117993B true FI117993B (fi) | 2007-05-15 |
Family
ID=23106989
Family Applications (5)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI961112A FI117993B (fi) | 1994-08-10 | 1996-03-08 | Menetelmä ja laite koodausnopeuden valitsemiseksi muuttuvanopeuksisessa vokooderissa |
FI20050704A FI122272B (fi) | 1994-08-10 | 2005-07-01 | Menetelmä ja laite koodausnopeuden valitsemiseksi muuttuvanopeuksisessa vokooderissa |
FI20050702A FI122273B (fi) | 1994-08-10 | 2005-07-01 | Menetelmä ja laite koodausnopeuden valitsemiseksi muuttuvanopeuksisessa vokooderissa |
FI20050703A FI123708B (fi) | 1994-08-10 | 2005-07-01 | Menetelmä ja laite koodausnopeuden valitsemiseksi muuttuvanopeuksisessa vokooderissa |
FI20061084A FI119085B (fi) | 1994-08-10 | 2006-12-07 | Menetelmä ja laite koodausnopeuden valitsemiseksi muuttuvanopeuksisessa vokooderissa |
Family Applications After (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI20050704A FI122272B (fi) | 1994-08-10 | 2005-07-01 | Menetelmä ja laite koodausnopeuden valitsemiseksi muuttuvanopeuksisessa vokooderissa |
FI20050702A FI122273B (fi) | 1994-08-10 | 2005-07-01 | Menetelmä ja laite koodausnopeuden valitsemiseksi muuttuvanopeuksisessa vokooderissa |
FI20050703A FI123708B (fi) | 1994-08-10 | 2005-07-01 | Menetelmä ja laite koodausnopeuden valitsemiseksi muuttuvanopeuksisessa vokooderissa |
FI20061084A FI119085B (fi) | 1994-08-10 | 2006-12-07 | Menetelmä ja laite koodausnopeuden valitsemiseksi muuttuvanopeuksisessa vokooderissa |
Country Status (20)
Country | Link |
---|---|
US (1) | US5742734A (ko) |
EP (6) | EP1233408B1 (ko) |
JP (8) | JP3502101B2 (ko) |
KR (3) | KR100455225B1 (ko) |
CN (5) | CN1168071C (ko) |
AT (5) | ATE358871T1 (ko) |
AU (1) | AU711401B2 (ko) |
BR (2) | BR9506036A (ko) |
CA (3) | CA2488918C (ko) |
DE (5) | DE69533881T2 (ko) |
DK (3) | DK1233408T3 (ko) |
ES (5) | ES2240602T5 (ko) |
FI (5) | FI117993B (ko) |
HK (2) | HK1015185A1 (ko) |
IL (1) | IL114874A (ko) |
MX (1) | MX9600920A (ko) |
PT (3) | PT1233408E (ko) |
TW (1) | TW277189B (ko) |
WO (1) | WO1996005592A1 (ko) |
ZA (1) | ZA956081B (ko) |
Families Citing this family (65)
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US7924783B1 (en) | 1994-05-06 | 2011-04-12 | Broadcom Corporation | Hierarchical communications system |
TW271524B (ko) | 1994-08-05 | 1996-03-01 | Qualcomm Inc | |
US5742734A (en) † | 1994-08-10 | 1998-04-21 | Qualcomm Incorporated | Encoding rate selection in a variable rate vocoder |
US6292476B1 (en) * | 1997-04-16 | 2001-09-18 | Qualcomm Inc. | Method and apparatus for providing variable rate data in a communications system using non-orthogonal overflow channels |
JPH09162837A (ja) * | 1995-11-22 | 1997-06-20 | Internatl Business Mach Corp <Ibm> | 圧縮方式を動的に変更する通信方法及び装置 |
JPH09185397A (ja) * | 1995-12-28 | 1997-07-15 | Olympus Optical Co Ltd | 音声情報記録装置 |
US5794199A (en) * | 1996-01-29 | 1998-08-11 | Texas Instruments Incorporated | Method and system for improved discontinuous speech transmission |
FI964975A (fi) * | 1996-12-12 | 1998-06-13 | Nokia Mobile Phones Ltd | Menetelmä ja laite puheen koodaamiseksi |
US6510208B1 (en) * | 1997-01-20 | 2003-01-21 | Sony Corporation | Telephone apparatus with audio recording function and audio recording method telephone apparatus with audio recording function |
US6202046B1 (en) | 1997-01-23 | 2001-03-13 | Kabushiki Kaisha Toshiba | Background noise/speech classification method |
US5920834A (en) * | 1997-01-31 | 1999-07-06 | Qualcomm Incorporated | Echo canceller with talk state determination to control speech processor functional elements in a digital telephone system |
DE19742944B4 (de) * | 1997-09-29 | 2008-03-27 | Infineon Technologies Ag | Verfahren zum Aufzeichnen eines digitalisierten Audiosignals |
US7072832B1 (en) * | 1998-08-24 | 2006-07-04 | Mindspeed Technologies, Inc. | System for speech encoding having an adaptive encoding arrangement |
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US6463407B2 (en) * | 1998-11-13 | 2002-10-08 | Qualcomm Inc. | Low bit-rate coding of unvoiced segments of speech |
US6393074B1 (en) | 1998-12-31 | 2002-05-21 | Texas Instruments Incorporated | Decoding system for variable-rate convolutionally-coded data sequence |
JP2000244384A (ja) * | 1999-02-18 | 2000-09-08 | Mitsubishi Electric Corp | 移動通信端末装置及び移動通信端末装置における音声符号化レート決定方法 |
US6397177B1 (en) * | 1999-03-10 | 2002-05-28 | Samsung Electronics, Co., Ltd. | Speech-encoding rate decision apparatus and method in a variable rate |
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