JPS5666919A - Automatic corrector for sound field - Google Patents

Automatic corrector for sound field

Info

Publication number
JPS5666919A
JPS5666919A JP14292179A JP14292179A JPS5666919A JP S5666919 A JPS5666919 A JP S5666919A JP 14292179 A JP14292179 A JP 14292179A JP 14292179 A JP14292179 A JP 14292179A JP S5666919 A JPS5666919 A JP S5666919A
Authority
JP
Japan
Prior art keywords
graphic equalizer
sound field
fed
frequency
speaker
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
JP14292179A
Other languages
Japanese (ja)
Other versions
JPS6158049B2 (en
Inventor
Masahide Yoneyama
Masaru Nara
Satoru Ito
Kazumasa Ishikawa
Toshihiko Takagi
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.)
Nippon Columbia Co Ltd
Original Assignee
Nippon Columbia Co Ltd
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 Nippon Columbia Co Ltd filed Critical Nippon Columbia Co Ltd
Priority to JP14292179A priority Critical patent/JPS5666919A/en
Publication of JPS5666919A publication Critical patent/JPS5666919A/en
Publication of JPS6158049B2 publication Critical patent/JPS6158049B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G5/00—Tone control or bandwidth control in amplifiers
    • H03G5/16—Automatic control
    • H03G5/165—Equalizers; Volume or gain control in limited frequency bands

Abstract

PURPOSE:To make easy the operation of sound field correction, by automatically controlling the graphic equalizer so that the output of frequency analysis can be desired characteristics. CONSTITUTION:To a graphic equalizer 2 in which the amplitude frequency characteristics are set flat in advance, pink noise is fed from a pink noise generator 1, it is amplified at an amplifier 3 and fed to a speaker 5 in a listening room 4. The acoustic signal in matching the speaker 5 with sound field is collected in the microphone 6, it is frequency-analyzed through band pass filters 71-7n corresponding to each filter in the graphic equalizer 2 and fed to a digital operation processor 10 via detectors 81-8n and A/D converters 91-9n. The digital operation processor 10 automatically controls the level of each resonant point of the graphic equalizer 2 so that the result of band frequency analysis can be desired frequency characteristics.
JP14292179A 1979-11-05 1979-11-05 Automatic corrector for sound field Granted JPS5666919A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14292179A JPS5666919A (en) 1979-11-05 1979-11-05 Automatic corrector for sound field

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14292179A JPS5666919A (en) 1979-11-05 1979-11-05 Automatic corrector for sound field

Publications (2)

Publication Number Publication Date
JPS5666919A true JPS5666919A (en) 1981-06-05
JPS6158049B2 JPS6158049B2 (en) 1986-12-10

Family

ID=15326718

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14292179A Granted JPS5666919A (en) 1979-11-05 1979-11-05 Automatic corrector for sound field

Country Status (1)

Country Link
JP (1) JPS5666919A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6021613A (en) * 1983-07-15 1985-02-04 Matsushita Electric Ind Co Ltd Automatic equalizing method
JPS61108213A (en) * 1984-10-31 1986-05-26 Pioneer Electronic Corp Automatic graphic equalizer
JPS62142704U (en) * 1986-02-20 1987-09-09
EP1126746A3 (en) * 2000-02-14 2004-07-07 Pioneer Corporation Automatic sound field correcting system and a sound field correcting method
EP1341399A3 (en) * 2002-02-28 2004-09-29 Pioneer Corporation Sound field control method and sound field control system
EP1748674A1 (en) * 2004-04-27 2007-01-31 Toa Corporation Resonance frequency determining method, resonance frequency selecting method, and resonance frequency determining apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993011647A1 (en) * 1991-11-28 1993-06-10 Kabushiki Kaisha Kenwood Device for correcting frequency characteristic of sound field

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5065161A (en) * 1973-10-11 1975-06-02
JPS527701A (en) * 1975-07-08 1977-01-21 Sony Corp Acoustic characteristic corrector

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5065161A (en) * 1973-10-11 1975-06-02
JPS527701A (en) * 1975-07-08 1977-01-21 Sony Corp Acoustic characteristic corrector

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6021613A (en) * 1983-07-15 1985-02-04 Matsushita Electric Ind Co Ltd Automatic equalizing method
JPS61108213A (en) * 1984-10-31 1986-05-26 Pioneer Electronic Corp Automatic graphic equalizer
JPS62142704U (en) * 1986-02-20 1987-09-09
EP1126746A3 (en) * 2000-02-14 2004-07-07 Pioneer Corporation Automatic sound field correcting system and a sound field correcting method
EP1341399A3 (en) * 2002-02-28 2004-09-29 Pioneer Corporation Sound field control method and sound field control system
EP1748674A1 (en) * 2004-04-27 2007-01-31 Toa Corporation Resonance frequency determining method, resonance frequency selecting method, and resonance frequency determining apparatus
EP1748674A4 (en) * 2004-04-27 2008-05-07 Toa Corp Resonance frequency determining method, resonance frequency selecting method, and resonance frequency determining apparatus
US7965850B2 (en) 2004-04-27 2011-06-21 Toa Corporation Resonance frequency determining method, resonance frequency selecting method, and resonance frequency determining apparatus

Also Published As

Publication number Publication date
JPS6158049B2 (en) 1986-12-10

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