JPS5714207A - Automatic controller for audio level - Google Patents

Automatic controller for audio level

Info

Publication number
JPS5714207A
JPS5714207A JP8889980A JP8889980A JPS5714207A JP S5714207 A JPS5714207 A JP S5714207A JP 8889980 A JP8889980 A JP 8889980A JP 8889980 A JP8889980 A JP 8889980A JP S5714207 A JPS5714207 A JP S5714207A
Authority
JP
Japan
Prior art keywords
supplied
timing
audio signal
level
detecting circuit
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
JP8889980A
Other languages
Japanese (ja)
Other versions
JPS647687B2 (en
Inventor
Masuo Wada
Norizou Nakamura
Hisao Ishii
Kiyoshi Nakada
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.)
TOKYO DENSHI KOGYO KK
Toshiba Corp
Tokyo Electronic Industry Co Ltd
Original Assignee
TOKYO DENSHI KOGYO KK
Toshiba Corp
Tokyo Electronic Industry Co Ltd
Tokyo Shibaura Electric 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 TOKYO DENSHI KOGYO KK, Toshiba Corp, Tokyo Electronic Industry Co Ltd, Tokyo Shibaura Electric Co Ltd filed Critical TOKYO DENSHI KOGYO KK
Priority to JP8889980A priority Critical patent/JPS5714207A/en
Publication of JPS5714207A publication Critical patent/JPS5714207A/en
Publication of JPS647687B2 publication Critical patent/JPS647687B2/ja
Granted legal-status Critical Current

Links

Classifications

    • 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
    • H03G3/3005—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers
    • H03G3/3026—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers the gain being discontinuously variable, e.g. controlled by switching
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/44—Arrangements characterised by circuits or components specially adapted for broadcast
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/02—Arrangements for generating broadcast information; Arrangements for generating broadcast-related information with a direct linking to broadcast information or to broadcast space-time; Arrangements for simultaneous generation of broadcast information and broadcast-related information
    • H04H60/04—Studio equipment; Interconnection of studios

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Control Of Amplification And Gain Control (AREA)

Abstract

PURPOSE:To exercise adequate level control by detecting the ascent inclination and descent inclination of the envelope of an audio signal and by performing the control matching with the timing. CONSTITUTION:An audio signal led to an output terminal 13 is supplied to a level detecting circuit 14 to detect the mean value of the audio signal digitally, and its output is supplied to a microcomputer 15. An audio signal inputted to an input terminal 11, on the other hand, is supplied to a timing detecting circuit 16 to discriminate between the ascent inclination and descent inclination of the develope of the audio signal, and the analysis information is supplied to the microcomputer 15 as information on the timing of the level correction start when level control is exercised. A digital control signal generated by the microcomputer 15 on the basis of the output of the level detecting circuit 14 is supplied to a level control interface part 17 at the control timing of the timing detecting circuit 16 to be converted into an analog DC signal, which is supplied to a losser 12.
JP8889980A 1980-06-30 1980-06-30 Automatic controller for audio level Granted JPS5714207A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8889980A JPS5714207A (en) 1980-06-30 1980-06-30 Automatic controller for audio level

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8889980A JPS5714207A (en) 1980-06-30 1980-06-30 Automatic controller for audio level

Publications (2)

Publication Number Publication Date
JPS5714207A true JPS5714207A (en) 1982-01-25
JPS647687B2 JPS647687B2 (en) 1989-02-09

Family

ID=13955799

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8889980A Granted JPS5714207A (en) 1980-06-30 1980-06-30 Automatic controller for audio level

Country Status (1)

Country Link
JP (1) JPS5714207A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6004384A (en) * 1998-06-03 1999-12-21 Bry-Air, Inc. Rotary adsorption apparatus
JP2013176040A (en) * 2012-02-23 2013-09-05 Mks Instruments Inc Feedback control and coherency of multiple power supplies in radio frequency power delivery system for pulsed mode scheme in thin film processing

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6004384A (en) * 1998-06-03 1999-12-21 Bry-Air, Inc. Rotary adsorption apparatus
JP2013176040A (en) * 2012-02-23 2013-09-05 Mks Instruments Inc Feedback control and coherency of multiple power supplies in radio frequency power delivery system for pulsed mode scheme in thin film processing
US9509266B2 (en) 2012-02-23 2016-11-29 Mks Instruments, Inc. Feedback control and coherency of multiple power supplies in radio frequency power delivery systems for pulsed mode schemes in thin film processing

Also Published As

Publication number Publication date
JPS647687B2 (en) 1989-02-09

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