CA2107320A1 - Audio signal processing apparatus with optimization process - Google Patents

Audio signal processing apparatus with optimization process

Info

Publication number
CA2107320A1
CA2107320A1 CA2107320A CA2107320A CA2107320A1 CA 2107320 A1 CA2107320 A1 CA 2107320A1 CA 2107320 A CA2107320 A CA 2107320A CA 2107320 A CA2107320 A CA 2107320A CA 2107320 A1 CA2107320 A1 CA 2107320A1
Authority
CA
Canada
Prior art keywords
signal
audio
low
voltage
level
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
Application number
CA2107320A
Other languages
French (fr)
Other versions
CA2107320C (en
Inventor
Masahiro Hibino
Masanobu Sato
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Masahiro Hibino
Masanobu Sato
Mitsubishi Denki Kabushiki Kaisha
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 by Masahiro Hibino, Masanobu Sato, Mitsubishi Denki Kabushiki Kaisha filed Critical Masahiro Hibino
Publication of CA2107320A1 publication Critical patent/CA2107320A1/en
Application granted granted Critical
Publication of CA2107320C publication Critical patent/CA2107320C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • G11B20/02—Analogue recording or reproducing

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Stereophonic System (AREA)
  • Reverberation, Karaoke And Other Acoustics (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

An audio signal processing apparatus performs the optimization process of an audio signal reproduced from a medium such as a compact disk. Each of low-pass and high-pass filters effects a band division on the audio signal. A peak analyzer detects the peak value of a low audio-range signal and outputs a control signal corresponding to the detected peak value to a voltage-controlled amplifier. The voltage-controlled amplifier adjusts the level of the low audio-range signal in accordance with the control signal. A mixture and distribution circuit combines the output of the voltage-controlled amplifier and the output of the high-pass filter and distributes the composite signal to corresponding power amplifiers for respectively driving speakers. Thus, a process suited to each of various music sources can be achieved by controlling the level of a low audio-range component based on the level of the low audio-range signal.
CA002107320A 1992-10-05 1993-09-29 Audio signal processing apparatus with optimization process Expired - Fee Related CA2107320C (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP265887/92 1992-10-05
JP26588792 1992-10-05
JP5188489A JPH06177688A (en) 1992-10-05 1993-07-29 Audio signal processing unit
JP188489/93 1993-07-29

Publications (2)

Publication Number Publication Date
CA2107320A1 true CA2107320A1 (en) 1994-04-06
CA2107320C CA2107320C (en) 1997-03-25

Family

ID=26504958

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002107320A Expired - Fee Related CA2107320C (en) 1992-10-05 1993-09-29 Audio signal processing apparatus with optimization process

Country Status (3)

Country Link
JP (1) JPH06177688A (en)
KR (1) KR0129429B1 (en)
CA (1) CA2107320C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002015642A1 (en) * 2000-08-14 2002-02-21 Lake Technology Limited Audio frequency response processing system

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE0004818D0 (en) 2000-12-22 2000-12-22 Coding Technologies Sweden Ab Enhancing source coding systems by adaptive transposition
JP2005197896A (en) 2004-01-05 2005-07-21 Yamaha Corp Audio signal supply apparatus for speaker array
JP4251077B2 (en) 2004-01-07 2009-04-08 ヤマハ株式会社 Speaker device
NZ532572A (en) * 2004-04-26 2006-10-27 Phitek Systems Ltd Audio signal processing for generating apparent bass through harmonics
JP3915804B2 (en) 2004-08-26 2007-05-16 ヤマハ株式会社 Audio playback device
JP4522246B2 (en) * 2004-12-14 2010-08-11 アルパイン株式会社 Automotive audio system
JP4779381B2 (en) 2005-02-25 2011-09-28 ヤマハ株式会社 Array speaker device
JP5019807B2 (en) * 2006-07-07 2012-09-05 シャープ株式会社 Speech synthesis apparatus, speech synthesis method, and program for realizing speech synthesis method
JP4913500B2 (en) 2006-08-10 2012-04-11 有限会社バイセラ Hearing adaptation device
CN101641965A (en) * 2007-03-20 2010-02-03 日本电气株式会社 Acoustic processing system and method for electronic device and mobile telephone terminal
JP5345067B2 (en) * 2007-10-30 2013-11-20 クラリオン株式会社 Hearing sensitivity correction device
US20120010737A1 (en) * 2009-03-16 2012-01-12 Pioneer Corporation Audio adjusting device
PL2381574T3 (en) 2010-04-22 2015-05-29 Fraunhofer Ges Forschung Apparatus and method for modifying an input audio signal
JP2011205687A (en) * 2011-06-09 2011-10-13 Pioneer Electronic Corp Audio regulator
JP6908833B2 (en) * 2016-08-05 2021-07-28 オンキヨーホームエンターテイメント株式会社 Signal processing device, signal processing method, and speaker device
US10614790B2 (en) * 2017-03-30 2020-04-07 Bose Corporation Automatic gain control in an active noise reduction (ANR) signal flow path
JP2019080290A (en) * 2017-10-27 2019-05-23 オンキヨー株式会社 Signal processing apparatus, signal processing method, and speaker apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002015642A1 (en) * 2000-08-14 2002-02-21 Lake Technology Limited Audio frequency response processing system
US7152082B2 (en) 2000-08-14 2006-12-19 Dolby Laboratories Licensing Corporation Audio frequency response processing system
US8009836B2 (en) 2000-08-14 2011-08-30 Dolby Laboratories Licensing Corporation Audio frequency response processing system

Also Published As

Publication number Publication date
CA2107320C (en) 1997-03-25
JPH06177688A (en) 1994-06-24
KR0129429B1 (en) 1998-04-17
KR940010041A (en) 1994-05-24

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Legal Events

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