JPH02118322U - - Google Patents

Info

Publication number
JPH02118322U
JPH02118322U JP1989026393U JP2639389U JPH02118322U JP H02118322 U JPH02118322 U JP H02118322U JP 1989026393 U JP1989026393 U JP 1989026393U JP 2639389 U JP2639389 U JP 2639389U JP H02118322 U JPH02118322 U JP H02118322U
Authority
JP
Japan
Prior art keywords
level detection
circuit
detection means
control circuit
nth
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.)
Pending
Application number
JP1989026393U
Other languages
English (en)
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1989026393U priority Critical patent/JPH02118322U/ja
Priority to US07/487,425 priority patent/US5172358A/en
Publication of JPH02118322U publication Critical patent/JPH02118322U/ja
Pending legal-status Critical Current

Links

Classifications

    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G5/00—Tone control or bandwidth control in amplifiers
    • H03G5/005—Tone control or bandwidth control in amplifiers of digital signals
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G5/00—Tone control or bandwidth control in amplifiers
    • H03G5/02—Manually-operated control
    • H03G5/04—Manually-operated control in untuned amplifiers
    • 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
    • H03G9/02—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers

Landscapes

  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)

Description

【図面の簡単な説明】
第１図はこの考案の一実施例の構成を示すブロ
ツク図、第２図および第３図は第１図における低
域ブースト回路１５、高域ブースト回路１９の構
成要素となるフイルタの例を示すブロツク図、第
４図は低域ブースト回路１５および高域ブースト
回路１９の具体的構成例を示す回路図およびその
ゲイン特性図、第５図はブースト回路１５，１９
の他の構成例の基本回路を示す回路図、第６図は
フレツチヤー・マンソン曲線を示す図、第７図は
生の音楽と再生時の音楽との聴感上の相異を説明
するための図、第８図は従来のラウドネス制御回
路の構成例を示す回路図である。 １３…ローパスフイルタ（レベル検出手段）、
１４…ハイパスフイルタ（レベル検出手段）、１
５…低域ブースト回路（制御手段）、１６，１７
…レベル検出回路（レベル検出手段）、１９…高
域ブースト回路（制御手段）。

Claims (1)

    【実用新案登録請求の範囲】
  1. 記録手段に記録された音楽信号を再生する再生
    回路に用いられるラウドネス制御回路において、
    前記再生信号の第１〜第Ｎの周波数帯域の信号成
    分のレベルを検出する第１〜第Ｎのレベル検出手
    段と、前記再生信号の第１〜第Ｎの周波数帯域の
    信号成分のレベルを各々前記第１〜第Ｎのレベル
    検出手段の出力に応じて制御する制御手段とを具
    備してなるラウドネス制御回路。
JP1989026393U 1989-03-08 1989-03-08 Pending JPH02118322U (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP1989026393U JPH02118322U (ja) 1989-03-08 1989-03-08
US07/487,425 US5172358A (en) 1989-03-08 1990-03-02 Loudness control circuit for an audio device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1989026393U JPH02118322U (ja) 1989-03-08 1989-03-08

Publications (1)

Publication Number Publication Date
JPH02118322U true JPH02118322U (ja) 1990-09-21

Family

ID=12192302

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1989026393U Pending JPH02118322U (ja) 1989-03-08 1989-03-08

Country Status (2)

Country Link
US (1) US5172358A (ja)
JP (1) JPH02118322U (ja)

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US5778077A (en) * 1995-09-13 1998-07-07 Davidson; Dennis M. Automatic volume adjusting device and method
US6026170A (en) * 1995-11-27 2000-02-15 Minnesota Mining And Manufacturing Company Electronic stethoscope with idealized bell and idealized diaphragm modes
DE19630330C2 (de) * 1996-07-26 1998-11-19 Sgs Thomson Microelectronics Audiosignalprozessor
DE19734969B4 (de) * 1996-09-28 2006-08-24 Volkswagen Ag Verfahren und Vorrichtung zur Wiedergabe von Audiosignalen
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US7013013B2 (en) * 1998-03-20 2006-03-14 Pioneer Electronic Corporation Surround device
JP3543929B2 (ja) * 1998-11-17 2004-07-21 パイオニア株式会社 ラウドネス装置
US7190292B2 (en) * 1999-11-29 2007-03-13 Bizjak Karl M Input level adjust system and method
US7027981B2 (en) 1999-11-29 2006-04-11 Bizjak Karl M System output control method and apparatus
US7016509B1 (en) * 2000-09-08 2006-03-21 Harman International Industries, Inc. System and method for varying low audio frequencies inversely with audio signal level
US6870830B1 (en) 2000-11-30 2005-03-22 3Com Corporation System and method for performing messaging services using a data communications channel in a data network telephone system
JP2005501460A (ja) * 2001-08-23 2005-01-13 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 オーディオ処理装置
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US7171010B2 (en) * 2003-09-11 2007-01-30 Boston Acoustics, Inc. Dynamic bass boost apparatus and method
JP4016206B2 (ja) * 2003-11-28 2007-12-05 ソニー株式会社 音声信号処理装置及び音声信号処理方法
US8054993B1 (en) * 2004-03-13 2011-11-08 Harman International Industries, Incorporated System for automatic compensation of low frequency audio based on human loudness perceptual models
JP2006019770A (ja) * 2004-05-31 2006-01-19 Toshiba Corp 放送受信装置及び放送受信方法、音声再生装置及び音声再生方法
WO2006047600A1 (en) 2004-10-26 2006-05-04 Dolby Laboratories Licensing Corporation Calculating and adjusting the perceived loudness and/or the perceived spectral balance of an audio signal
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US8045731B2 (en) * 2005-06-06 2011-10-25 Yamaha Corporation Sound quality adjustment device
US8238576B2 (en) * 2005-06-30 2012-08-07 Cirrus Logic, Inc. Level dependent bass management
TWI517562B (zh) 2006-04-04 2016-01-11 杜比實驗室特許公司 用於將多聲道音訊信號之全面感知響度縮放一期望量的方法、裝置及電腦程式
CN101410892B (zh) 2006-04-04 2012-08-08 杜比实验室特许公司 改进的离散余弦变换域中的音频信号响度测量及修改
CN102684628B (zh) 2006-04-27 2014-11-26 杜比实验室特许公司 修正音频动态处理器的参数的方法以及执行该方法的设备
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KR101137715B1 (ko) 2006-10-20 2012-04-25 돌비 레버러토리즈 라이쎈싱 코오포레이션 리셋을 사용하는 오디오 다이내믹스 프로세싱
US8521314B2 (en) 2006-11-01 2013-08-27 Dolby Laboratories Licensing Corporation Hierarchical control path with constraints for audio dynamics processing
US8249271B2 (en) 2007-01-23 2012-08-21 Karl M. Bizjak Noise analysis and extraction systems and methods
US8396574B2 (en) * 2007-07-13 2013-03-12 Dolby Laboratories Licensing Corporation Audio processing using auditory scene analysis and spectral skewness
US8315398B2 (en) * 2007-12-21 2012-11-20 Dts Llc System for adjusting perceived loudness of audio signals
US8068185B2 (en) * 2009-02-03 2011-11-29 Ali Corporation Volume adjusting method for channel switching of digital television
JP2010226454A (ja) * 2009-03-24 2010-10-07 Fujitsu Semiconductor Ltd ゲインコントロール回路及びそれを有する電子ボリューム回路
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JP6439261B2 (ja) * 2014-03-19 2018-12-19 ヤマハ株式会社 オーディオ信号処理装置
CN104869503B (zh) * 2015-03-23 2019-01-04 深圳市冠旭电子股份有限公司 一种基于等响曲线的动态低频加强方法及***
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Also Published As

Publication number Publication date
US5172358A (en) 1992-12-15

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