BR0107191A - Métodos para estimar um ganho de compressão obtenìvel na compressão de um dado sinal de áudio, para gravar um sinal de áudio em um meio de gravação, e para transmitir um sinal de áudio, dispositivo para estimar um ganho de compressão obtenìvel na compressão de um dado sinal de áudio, aparelho de gravação para gravar um sinal de áudio em um meio de gravação, e, transmissor para transmitir um sinal de áudio - Google Patents
Métodos para estimar um ganho de compressão obtenìvel na compressão de um dado sinal de áudio, para gravar um sinal de áudio em um meio de gravação, e para transmitir um sinal de áudio, dispositivo para estimar um ganho de compressão obtenìvel na compressão de um dado sinal de áudio, aparelho de gravação para gravar um sinal de áudio em um meio de gravação, e, transmissor para transmitir um sinal de áudioInfo
- Publication number
- BR0107191A BR0107191A BR0107191-2A BR0107191A BR0107191A BR 0107191 A BR0107191 A BR 0107191A BR 0107191 A BR0107191 A BR 0107191A BR 0107191 A BR0107191 A BR 0107191A
- Authority
- BR
- Brazil
- Prior art keywords
- audio signal
- compression
- record
- transmit
- recording medium
- Prior art date
Links
- 230000005236 sound signal Effects 0.000 title abstract 14
- 230000006835 compression Effects 0.000 title abstract 10
- 238000007906 compression Methods 0.000 title abstract 10
- 238000000034 method Methods 0.000 title abstract 2
Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
- H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
- H03M7/3002—Conversion to or from differential modulation
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M3/00—Conversion of analogue values to or from differential modulation
- H03M3/30—Delta-sigma modulation
- H03M3/458—Analogue/digital converters using delta-sigma modulation as an intermediate step
- H03M3/478—Means for controlling the correspondence between the range of the input signal and the range of signals the converter can handle; Means for out-of-range indication
- H03M3/48—Means for controlling the correspondence between the range of the input signal and the range of signals the converter can handle; Means for out-of-range indication characterised by the type of range control, e.g. limiting
- H03M3/482—Means for controlling the correspondence between the range of the input signal and the range of signals the converter can handle; Means for out-of-range indication characterised by the type of range control, e.g. limiting by adapting the quantisation step size
-
- 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
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00007—Time or data compression or expansion
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/10527—Audio or video recording; Data buffering arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B14/00—Transmission systems not characterised by the medium used for transmission
- H04B14/02—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation
- H04B14/06—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using differential modulation, e.g. delta modulation
- H04B14/062—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using differential modulation, e.g. delta modulation using delta modulation or one-bit differential modulation [1DPCM]
- H04B14/064—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using differential modulation, e.g. delta modulation using delta modulation or one-bit differential modulation [1DPCM] with adaptive feedback
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00007—Time or data compression or expansion
- G11B2020/00014—Time or data compression or expansion the compressed signal being an audio signal
- G11B2020/00065—Sigma-delta audio encoding
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M3/00—Conversion of analogue values to or from differential modulation
- H03M3/30—Delta-sigma modulation
- H03M3/39—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators
- H03M3/402—Arrangements specific to bandpass modulators
- H03M3/404—Arrangements specific to bandpass modulators characterised by the type of bandpass filters used
- H03M3/406—Arrangements specific to bandpass modulators characterised by the type of bandpass filters used by the use of a pair of integrators forming a closed loop
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M3/00—Conversion of analogue values to or from differential modulation
- H03M3/30—Delta-sigma modulation
- H03M3/39—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators
- H03M3/412—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the number of quantisers and their type and resolution
- H03M3/422—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the number of quantisers and their type and resolution having one quantiser only
- H03M3/43—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the number of quantisers and their type and resolution having one quantiser only the quantiser being a single bit one
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M3/00—Conversion of analogue values to or from differential modulation
- H03M3/30—Delta-sigma modulation
- H03M3/39—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators
- H03M3/436—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the order of the loop filter, e.g. error feedback type
- H03M3/438—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the order of the loop filter, e.g. error feedback type the modulator having a higher order loop filter in the feedforward path
- H03M3/452—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators characterised by the order of the loop filter, e.g. error feedback type the modulator having a higher order loop filter in the feedforward path with weighted feedforward summation, i.e. with feedforward paths from more than one filter stage to the quantiser input
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M3/00—Conversion of analogue values to or from differential modulation
- H03M3/30—Delta-sigma modulation
- H03M3/458—Analogue/digital converters using delta-sigma modulation as an intermediate step
- H03M3/478—Means for controlling the correspondence between the range of the input signal and the range of signals the converter can handle; Means for out-of-range indication
- H03M3/488—Means for controlling the correspondence between the range of the input signal and the range of signals the converter can handle; Means for out-of-range indication using automatic control
- H03M3/49—Means for controlling the correspondence between the range of the input signal and the range of signals the converter can handle; Means for out-of-range indication using automatic control in feedback mode, i.e. by determining the range to be selected from one or more previous digital output values
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Theoretical Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Health & Medical Sciences (AREA)
- Computational Linguistics (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Abstract
"MéTODOS PARA ESTIMAR UM GANHO DE COMPRESSãO OBTENìVEL NA COMPRESSãO DE UM DADO SINAL DE áUDIO, PARA GRAVAR UM SINAL DE áUDIO EM UM MEIO DE GRAVAçãO, E PARA TRANSMITIR UM SINAL DE áUDIO, DISPOSITIVO PARA ESTIMAR UM GANHO DE COMPRESSãO OBTENìVEL NA COMPRESSãO DE UM DADO SINAL DE áUDIO, APARELHO DE GRAVAçãO PARA GRAVAR UM SINAL DE áUDIO EM UM MEIO DE GRAVAçãO, E, TRANSMISSOR PARA TRANSMITIR UM SINAL DE áUDIO". Estimar um ganho de compressão obtenível pela compressão de um dado sinal de áudio, compreendendo extrair uma potência de sinal em uma faixa de freq³ência selecionada do sinal de áudio dado, e obtendo uma estimativa do ganho de compressão pela correlação com a potência de sinal extraída.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00203097 | 2000-09-08 | ||
PCT/EP2001/010336 WO2002021525A1 (en) | 2000-09-08 | 2001-09-06 | Audio signal compression |
Publications (1)
Publication Number | Publication Date |
---|---|
BR0107191A true BR0107191A (pt) | 2002-07-16 |
Family
ID=8171989
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR0107191-2A BR0107191A (pt) | 2000-09-08 | 2001-09-06 | Métodos para estimar um ganho de compressão obtenìvel na compressão de um dado sinal de áudio, para gravar um sinal de áudio em um meio de gravação, e para transmitir um sinal de áudio, dispositivo para estimar um ganho de compressão obtenìvel na compressão de um dado sinal de áudio, aparelho de gravação para gravar um sinal de áudio em um meio de gravação, e, transmissor para transmitir um sinal de áudio |
Country Status (8)
Country | Link |
---|---|
US (3) | US20020165631A1 (pt) |
EP (2) | EP1328938A1 (pt) |
JP (2) | JP2004508755A (pt) |
KR (2) | KR20020052203A (pt) |
CN (2) | CN1388965A (pt) |
AU (1) | AU2001285936A1 (pt) |
BR (1) | BR0107191A (pt) |
WO (2) | WO2002021526A1 (pt) |
Families Citing this family (21)
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KR20020052203A (ko) * | 2000-09-08 | 2002-07-02 | 요트.게.아. 롤페즈 | 오디오 신호 압축 |
WO2004004174A1 (en) * | 2002-06-28 | 2004-01-08 | Koninklijke Philips Electronics N.V. | Adaptive rate matching method |
US8718298B2 (en) * | 2003-12-19 | 2014-05-06 | Lear Corporation | NVH dependent parallel compression processing for automotive audio systems |
CA2457988A1 (en) * | 2004-02-18 | 2005-08-18 | Voiceage Corporation | Methods and devices for audio compression based on acelp/tcx coding and multi-rate lattice vector quantization |
US7009540B1 (en) * | 2005-01-04 | 2006-03-07 | Faraday Technology Corp. | Method for designing a noise shaper with a single loop distributed feedback delta-sigma modulator |
US20070147518A1 (en) * | 2005-02-18 | 2007-06-28 | Bruno Bessette | Methods and devices for low-frequency emphasis during audio compression based on ACELP/TCX |
US8249861B2 (en) * | 2005-04-20 | 2012-08-21 | Qnx Software Systems Limited | High frequency compression integration |
US8086451B2 (en) * | 2005-04-20 | 2011-12-27 | Qnx Software Systems Co. | System for improving speech intelligibility through high frequency compression |
US7813931B2 (en) * | 2005-04-20 | 2010-10-12 | QNX Software Systems, Co. | System for improving speech quality and intelligibility with bandwidth compression/expansion |
CN101189678A (zh) * | 2005-05-30 | 2008-05-28 | 皇家飞利浦电子股份有限公司 | 具有最小存储要求的直接流数字音频 |
EP1900102A2 (en) * | 2005-06-27 | 2008-03-19 | Qualcomm Flarion Technologies, Inc. | Methods and apparatus for implementing and/or using amplifiers and/or for performing various amplification related operations |
US7289050B1 (en) * | 2005-06-27 | 2007-10-30 | Qualcomm Incorporated | Amplification method and apparatus |
US20080000431A1 (en) * | 2006-06-29 | 2008-01-03 | Stephen Longo | Dog leash assembly |
CN101479790B (zh) * | 2006-06-29 | 2012-05-23 | Nxp股份有限公司 | 噪声合成 |
TW200813816A (en) * | 2006-09-11 | 2008-03-16 | Princeton Technology Corp | Optimal parameter adjusting method and system |
BRPI0720266A2 (pt) * | 2006-12-13 | 2014-01-28 | Panasonic Corp | Dispositivo de decodificação de aúdio e método de ajuste de potência |
CN101179716B (zh) * | 2007-11-30 | 2011-12-07 | 华南理工大学 | 一种压缩域的传输数据流音频自动增益控制方法 |
WO2011145044A1 (en) * | 2010-05-17 | 2011-11-24 | Green Sql Ltd | Database translation system and method |
FR3011408A1 (fr) * | 2013-09-30 | 2015-04-03 | Orange | Re-echantillonnage d'un signal audio pour un codage/decodage a bas retard |
EP3267587B1 (en) * | 2015-03-03 | 2021-05-19 | Sony Corporation | Compression encoding device, compression encoding method, decoding device, decoding method and program |
WO2017203976A1 (ja) * | 2016-05-24 | 2017-11-30 | ソニー株式会社 | 圧縮符号化装置及び方法、復号装置及び方法、並びにプログラム |
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JP2744006B2 (ja) * | 1988-03-15 | 1998-04-28 | 株式会社東芝 | 非線形a/d変換回路及び非線形a/d変換方法 |
JPH0311811A (ja) * | 1989-06-09 | 1991-01-21 | Fujitsu Ltd | 適応型雑音整形フィルタ |
US5594598A (en) | 1992-10-19 | 1997-01-14 | Canon Kabushiki Kaisha | Information recording apparatus having variable compression ratio |
JP3465401B2 (ja) * | 1994-03-03 | 2003-11-10 | ソニー株式会社 | オーデイオ信号処理装置及びオーデイオ記録装置 |
US5608400A (en) * | 1995-08-24 | 1997-03-04 | Martin Marietta Corporation | Selectable intermediate frequency sigma-delta analog-to-digital converter |
US6434246B1 (en) * | 1995-10-10 | 2002-08-13 | Gn Resound As | Apparatus and methods for combining audio compression and feedback cancellation in a hearing aid |
US6097824A (en) * | 1997-06-06 | 2000-08-01 | Audiologic, Incorporated | Continuous frequency dynamic range audio compressor |
JP3327114B2 (ja) | 1996-04-24 | 2002-09-24 | ソニー株式会社 | 信号処理装置、信号記録装置及び信号再生装置 |
US6269338B1 (en) * | 1996-10-10 | 2001-07-31 | U.S. Philips Corporation | Data compression and expansion of an audio signal |
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EP0907258B1 (en) * | 1997-10-03 | 2007-01-03 | Matsushita Electric Industrial Co., Ltd. | Audio signal compression, speech signal compression and speech recognition |
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KR20020052203A (ko) | 2000-09-08 | 2002-07-02 | 요트.게.아. 롤페즈 | 오디오 신호 압축 |
US7277554B2 (en) * | 2001-08-08 | 2007-10-02 | Gn Resound North America Corporation | Dynamic range compression using digital frequency warping |
-
2001
- 2001-09-06 KR KR1020027005886A patent/KR20020052203A/ko not_active Application Discontinuation
- 2001-09-06 JP JP2002525656A patent/JP2004508755A/ja not_active Withdrawn
- 2001-09-06 JP JP2002525655A patent/JP4950407B2/ja not_active Expired - Fee Related
- 2001-09-06 BR BR0107191-2A patent/BR0107191A/pt not_active IP Right Cessation
- 2001-09-06 CN CN01802647A patent/CN1388965A/zh active Pending
- 2001-09-06 WO PCT/EP2001/010340 patent/WO2002021526A1/en active Application Filing
- 2001-09-06 WO PCT/EP2001/010336 patent/WO2002021525A1/en not_active Application Discontinuation
- 2001-09-06 KR KR1020027005952A patent/KR20020051933A/ko not_active Application Discontinuation
- 2001-09-06 US US10/129,692 patent/US20020165631A1/en not_active Abandoned
- 2001-09-06 CN CNB01802646XA patent/CN1308949C/zh not_active Expired - Fee Related
- 2001-09-06 EP EP01978350A patent/EP1328938A1/en not_active Withdrawn
- 2001-09-06 US US10/129,695 patent/US6819275B2/en not_active Expired - Fee Related
- 2001-09-06 EP EP01965265A patent/EP1317754A1/en not_active Withdrawn
- 2001-09-06 AU AU2001285936A patent/AU2001285936A1/en not_active Abandoned
-
2004
- 2004-06-15 US US10/868,258 patent/US20040230427A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
AU2001285936A1 (en) | 2002-03-22 |
US20020165631A1 (en) | 2002-11-07 |
JP2004508755A (ja) | 2004-03-18 |
JP2004508598A (ja) | 2004-03-18 |
CN1388964A (zh) | 2003-01-01 |
US6819275B2 (en) | 2004-11-16 |
WO2002021526A1 (en) | 2002-03-14 |
US20020163455A1 (en) | 2002-11-07 |
US20040230427A1 (en) | 2004-11-18 |
KR20020052203A (ko) | 2002-07-02 |
KR20020051933A (ko) | 2002-06-29 |
CN1308949C (zh) | 2007-04-04 |
JP4950407B2 (ja) | 2012-06-13 |
EP1328938A1 (en) | 2003-07-23 |
CN1388965A (zh) | 2003-01-01 |
EP1317754A1 (en) | 2003-06-11 |
WO2002021525A1 (en) | 2002-03-14 |
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Legal Events
Date | Code | Title | Description |
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B08F | Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette] |
Free format text: REFERENTE 6A., 7A. E 8A. ANUIDADES. |
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B08K | Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette] |
Free format text: REFERENTE AO DESPACHO 8.6 DA RPI 2012 DE 28/07/2009. |