JPS5585199A - Processing circuit for stereo signal - Google Patents

Processing circuit for stereo signal

Info

Publication number
JPS5585199A
JPS5585199A JP16555578A JP16555578A JPS5585199A JP S5585199 A JPS5585199 A JP S5585199A JP 16555578 A JP16555578 A JP 16555578A JP 16555578 A JP16555578 A JP 16555578A JP S5585199 A JPS5585199 A JP S5585199A
Authority
JP
Japan
Prior art keywords
signal
level
phase component
variable gain
gain amplifier
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
JP16555578A
Other languages
Japanese (ja)
Inventor
Kazuo Okuya
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
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP16555578A priority Critical patent/JPS5585199A/en
Publication of JPS5585199A publication Critical patent/JPS5585199A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S1/00—Two-channel systems

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Stereophonic System (AREA)

Abstract

PURPOSE:To effectively perform the mitigation of suppression on in-phase component included in stereo signal and the extension of sound field, by controlling the variable gain amplifier to which the output of phase shifter is inputted in response to the level of the difference signal betweel L and R signals. CONSTITUTION:The L signal inputted to the L signal input terminal 1 is superimposed on the R signal at the R signal output terminal 4 via the inverter 5 and variable gain amplifier 13, and the R signal inputted to the R signal input terminal 2 is superimposed on the L signal at the L signal output terminal 3 via the inverter 6 and variable gain amplifier 14, and they are respectively outputted. The signal difference detector 12 detects the level of in-phase component with the subtraction of L and R signals, the gain control signal is outputted to the variable gain amplifier 13, 14 according to it, and if the level of in-phase component is greater, the gain is reduced, and if the level of in-phase component is smaller, it increases.
JP16555578A 1978-12-21 1978-12-21 Processing circuit for stereo signal Pending JPS5585199A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16555578A JPS5585199A (en) 1978-12-21 1978-12-21 Processing circuit for stereo signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16555578A JPS5585199A (en) 1978-12-21 1978-12-21 Processing circuit for stereo signal

Publications (1)

Publication Number Publication Date
JPS5585199A true JPS5585199A (en) 1980-06-26

Family

ID=15814583

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16555578A Pending JPS5585199A (en) 1978-12-21 1978-12-21 Processing circuit for stereo signal

Country Status (1)

Country Link
JP (1) JPS5585199A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007129517A1 (en) * 2006-05-08 2007-11-15 Pioneer Corporation Audio signal processor, surround signal generating method, and so forth

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007129517A1 (en) * 2006-05-08 2007-11-15 Pioneer Corporation Audio signal processor, surround signal generating method, and so forth
JP4797065B2 (en) * 2006-05-08 2011-10-19 パイオニア株式会社 Audio signal processing apparatus and surround signal generation method, etc.
US8194860B2 (en) 2006-05-08 2012-06-05 Pioneer Corporation Audio signal processing system and surround signal generation method

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