JP5911852B2 - 可変指数平均検出器およびダイナミックレンジ制御器 - Google Patents
可変指数平均検出器およびダイナミックレンジ制御器 Download PDFInfo
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- JP5911852B2 JP5911852B2 JP2013513194A JP2013513194A JP5911852B2 JP 5911852 B2 JP5911852 B2 JP 5911852B2 JP 2013513194 A JP2013513194 A JP 2013513194A JP 2013513194 A JP2013513194 A JP 2013513194A JP 5911852 B2 JP5911852 B2 JP 5911852B2
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
- G06F7/38—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation
- G06F7/48—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation using non-contact-making devices, e.g. tube, solid state device; using unspecified devices
- G06F7/544—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation using non-contact-making devices, e.g. tube, solid state device; using unspecified devices for evaluating functions by calculation
- G06F7/556—Logarithmic or exponential functions
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/002—Control of digital or coded signals
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/3089—Control of digital or coded signals
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G7/00—Volume compression or expansion in amplifiers
- H03G7/007—Volume compression or expansion in amplifiers of digital or coded signals
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G9/00—Combinations of two or more types of control, e.g. gain control and tone control
- H03G9/005—Combinations of two or more types of control, e.g. gain control and tone control of digital or coded signals
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- Engineering & Computer Science (AREA)
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- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Pure & Applied Mathematics (AREA)
- Mathematical Analysis (AREA)
- Computational Mathematics (AREA)
- Computing Systems (AREA)
- Mathematical Optimization (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Amplification And Gain Control (AREA)
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
- Studio Devices (AREA)
- Picture Signal Circuits (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
Description
So=LAuIn−Del
SE=So*E
Ch=ALogOut=AntiLogSigBase(So*E)
Ch=AntiLogSigBase(Se)
または、
SE=LogSigBase(Ch)
平衡状態において、Ch=Rb
SE=LogSigBase(Rb)
So=SE/E
So=LogSigBase(Rb)/E
平衡状態において、DO=Del
Del=LAuIn−So
CO=LAuIn−LogSigBase(Rb)/E
かくして、誘導されたオフセット(DO−LAuIn)=−LogSigBase(Rb)/E
対数ドメイン回路のコンテキスト内で動作しているAntiLogSigBase()モジュールを用いたこのような構成の動的な(過渡的な)動作では、積分器(I)での「平均」が対数ではなく、線形になされる。しかし、検出が対数ドメイン内であるため、VEA検出器のダイナミックレンジは指数関数的に大きくなる。これらの結果は、大変好ましいもので、新規であり、予期されるものではない。
So=LAuIn+RCs−Del
Se=E*So
Ch=AntiLogSigBase(Se)
平衡状態において、Ch=Rb
DO=Del
LRb=LogSigBase(Rb)
RCs=LRb/E
式3と4より、Rb==AntiLogSigBase(Se)
式2より、Rb=AntiLogSigBase(E*So)
式1より、Rb=AntiLogSigBase(E*(LAuInHHRCs−Del))
式7より、Rb=AntiLogSigBase(E*(LAuInH−(LRb/E)−Del))
式5より、Rb=AntiLogSigBase(E*(LAuInH−(LRb/E)−DO))
式6より、Rb=AntiLogSigBase(E*(LAuInHl・(LogSigBase(Rb)/E)DO))
これは以下の通りになる。
LogSigBase(Rb)=E*LAuIn+E*(LogSigBase(Rb)/E)−E*DO
LogSigBase(Rb)=E*LAuIn+LogSigBase(Rb)−E*DO
E*DO+LogSigBase(Rb)=E*LAuIn+LogSigBase(Rb)
E*DO=E*LAuIn
DO=LAuIn
これは、指数(E)とリリース時間(Rt)の全ての値に対して正しい。
Claims (10)
- ダイナミックレンジコントローラにおける基数信号の信号処理方法であって、
前記基数信号の対数をとることにより、対数信号を生成することと、
第1フィードバック経路に設けられた第1合計ポイントにて、前記対数信号から時間遅延信号を差し引くことにより、変更対数信号を生成することと、
前記変更対数信号に指数を乗ずることにより、効果的にべき乗された対数信号を生成することと、
前記効果的にべき乗された対数信号から得られた第1中間信号の逆対数をとることにより、逆対数信号を生成することと、
前記逆対数信号から得られた第2中間信号に、第2フィードバック経路を介して、前記時間遅延信号を加算することにより、出力信号を生成することと、
を含み、
前記時間遅延信号は、前記出力信号を時間的に遅延させた信号である、
信号処理方法。 - 前記第1フィードバック経路と前記第2フィードバック経路とは重複している、請求項1に記載の信号処理方法。
- 前記第2中間信号に前記時間遅延信号を加算することは、積分器における積分を提供する、請求項1に記載の信号処理方法。
- 前記出力信号は、前記基数信号を信号処理するための制御値である、請求項1に記載の信号処理方法。
- 前記出力信号は、前記基数信号のダイナミックレンジを制御するための制御値である、請求項1に記載の信号処理方法。
- 前記第1中間信号は、前記効果的にべき乗された対数信号を整流することにより生成される、請求項1に記載の信号処理方法。
- 前記第1中間信号は、前記効果的にべき乗された対数信号である、請求項1に記載の信号処理方法。
- 前記第2中間信号は、前記逆対数信号のオーバーシュートを制限した信号である、請求項1に記載の信号処理方法。
- 前記第2中間信号は、前記逆対数信号である、請求項1に記載の信号処理方法。
- 前記出力信号は、前記指数乗された前記基数信号値の平均を算出し、当該平均の前記指数乗根を算出することにより得られる前記指数乗の平均乗根に収束する、請求項1に記載の信号処理方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/790,483 US8510361B2 (en) | 2010-05-28 | 2010-05-28 | Variable exponent averaging detector and dynamic range controller |
US12/790,483 | 2010-05-28 | ||
PCT/US2011/036566 WO2011149692A1 (en) | 2010-05-28 | 2011-05-14 | Variable exponent averaging detector and dynamic range controller |
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JP2013530645A JP2013530645A (ja) | 2013-07-25 |
JP2013530645A5 JP2013530645A5 (ja) | 2014-07-10 |
JP5911852B2 true JP5911852B2 (ja) | 2016-04-27 |
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JP2013513194A Active JP5911852B2 (ja) | 2010-05-28 | 2011-05-14 | 可変指数平均検出器およびダイナミックレンジ制御器 |
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US (1) | US8510361B2 (ja) |
EP (1) | EP2577447B1 (ja) |
JP (1) | JP5911852B2 (ja) |
KR (1) | KR101622002B1 (ja) |
CN (1) | CN103098017B (ja) |
AU (1) | AU2011258753B2 (ja) |
BR (1) | BR112012030106A2 (ja) |
CA (1) | CA2800201C (ja) |
DK (1) | DK2577447T3 (ja) |
NZ (1) | NZ603907A (ja) |
WO (1) | WO2011149692A1 (ja) |
Families Citing this family (8)
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EP2854403A1 (en) * | 2013-09-30 | 2015-04-01 | Samsung Electronics Co., Ltd | Image generating apparatus and display device for layered display scheme based on location of eye of user |
US9900689B2 (en) * | 2014-06-30 | 2018-02-20 | Harman International Industries Incorporated | Adaptive detector and auto mode for dynamics processor |
CN112185401B (zh) * | 2014-10-10 | 2024-07-02 | 杜比实验室特许公司 | 基于发送无关的表示的节目响度 |
US10352955B2 (en) * | 2016-04-20 | 2019-07-16 | Hamilton Sundstrand Corporation | Rotary speed sensors |
CN110679083B (zh) | 2017-03-31 | 2023-11-17 | 杜比国际公司 | 动态范围控制反演 |
CN109993175B (zh) * | 2017-12-29 | 2021-12-07 | 比亚迪股份有限公司 | 汽车及基于可变指数的目标追踪方法、装置 |
CA3147920A1 (en) * | 2019-06-27 | 2020-12-30 | Bengal Rehabilitation Group | Mobile phone based hearing loss correction system |
US20220342624A1 (en) * | 2021-04-22 | 2022-10-27 | Rohde & Schwarz Gmbh & Co. Kg | Method and monitoring system for providing signal level performance information |
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GB2179809B (en) * | 1983-09-21 | 1987-10-21 | British Broadcasting Corp | Dynamic range control of a signal |
CN1006094B (zh) * | 1985-07-06 | 1989-12-13 | Rca许可公司 | 提供正交相关的两个分矢量的矢量和的模值的装置 |
US5553012A (en) * | 1995-03-10 | 1996-09-03 | Motorola, Inc. | Exponentiation circuit utilizing shift means and method of using same |
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WO1997012331A1 (en) * | 1995-09-28 | 1997-04-03 | Motorola Inc. | Method and system for performing a convolution operation |
WO1999004487A1 (en) * | 1997-07-18 | 1999-01-28 | Koninklijke Philips Electronics N.V. | Signal-processing device |
JP3616483B2 (ja) * | 1997-09-18 | 2005-02-02 | 日本電気エンジニアリング株式会社 | レーダ受信機の自動利得制御回路 |
GB2330749B (en) * | 1997-10-24 | 2002-08-21 | Sony Uk Ltd | Audio signal processor |
JP2001284996A (ja) * | 2000-03-31 | 2001-10-12 | Matsushita Electric Ind Co Ltd | ゲイン制御装置 |
CA2420671C (en) * | 2000-08-31 | 2011-12-13 | Dolby Laboratories Licensing Corporation | Method for apparatus for audio matrix decoding |
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GB2455742B (en) * | 2007-12-19 | 2011-11-02 | Wolfson Microelectronics Plc | Dynamic range controller |
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2010
- 2010-05-28 US US12/790,483 patent/US8510361B2/en active Active
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2011
- 2011-05-14 NZ NZ603907A patent/NZ603907A/en unknown
- 2011-05-14 CN CN201180038426.0A patent/CN103098017B/zh active Active
- 2011-05-14 AU AU2011258753A patent/AU2011258753B2/en active Active
- 2011-05-14 CA CA2800201A patent/CA2800201C/en active Active
- 2011-05-14 JP JP2013513194A patent/JP5911852B2/ja active Active
- 2011-05-14 EP EP11787122.8A patent/EP2577447B1/en active Active
- 2011-05-14 BR BR112012030106A patent/BR112012030106A2/pt not_active Application Discontinuation
- 2011-05-14 WO PCT/US2011/036566 patent/WO2011149692A1/en active Application Filing
- 2011-05-14 DK DK11787122.8T patent/DK2577447T3/en active
- 2011-05-14 KR KR1020127034000A patent/KR101622002B1/ko active IP Right Grant
Also Published As
Publication number | Publication date |
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EP2577447B1 (en) | 2017-12-27 |
AU2011258753A1 (en) | 2012-12-20 |
CN103098017B (zh) | 2016-05-18 |
EP2577447A4 (en) | 2016-09-28 |
EP2577447A1 (en) | 2013-04-10 |
KR20130085372A (ko) | 2013-07-29 |
US20110295919A1 (en) | 2011-12-01 |
BR112012030106A2 (pt) | 2017-10-03 |
CN103098017A (zh) | 2013-05-08 |
US8510361B2 (en) | 2013-08-13 |
CA2800201A1 (en) | 2011-12-01 |
DK2577447T3 (en) | 2018-02-12 |
AU2011258753B2 (en) | 2015-01-22 |
KR101622002B1 (ko) | 2016-05-31 |
NZ603907A (en) | 2014-01-31 |
WO2011149692A1 (en) | 2011-12-01 |
CA2800201C (en) | 2016-03-15 |
JP2013530645A (ja) | 2013-07-25 |
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