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JPS64900A - Sound field control circuit - Google Patents

Sound field control circuit

Info

Publication number
JPS64900A
JPS64900A JP62155779A JP15577987A JPS64900A JP S64900 A JPS64900 A JP S64900A JP 62155779 A JP62155779 A JP 62155779A JP 15577987 A JP15577987 A JP 15577987A JP S64900 A JPS64900 A JP S64900A
Authority
JP
Japan
Prior art keywords
delay
signal
signals
detection circuit
speakers
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
JP62155779A
Other languages
Japanese (ja)
Other versions
JPH01900A (en
Inventor
Masayuki Iwamatsu
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.)
Yamaha Corp
Original Assignee
Yamaha 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 Yamaha Corp filed Critical Yamaha Corp
Priority to JP62-155779A priority Critical patent/JPH01900A/en
Priority claimed from JP62-155779A external-priority patent/JPH01900A/en
Publication of JPS64900A publication Critical patent/JPS64900A/en
Publication of JPH01900A publication Critical patent/JPH01900A/en
Pending legal-status Critical Current

Links

Landscapes

  • Stereophonic System (AREA)

Abstract

PURPOSE: To reproduce directivity in respect of a backward sound as well, and to elevate the attendance feeling, and in addition, to simplify a constitution by controlling the delay time of the respective outputs of a rear left and a rear right speakers according to the height of the relative level of a two-channel stereoscopic input signal.
CONSTITUTION: Delaying means 5L, 5R, which delay signals to be supplied to the respective speakers respectively, and in addition, control their delay quantity, are provided between a substracter 2 and the rear left and the rear right channel speakers LR, RR, and the delay time is controlled by the signal from a level detection circuit 7. The detection circuit 7 inputs two-channel stereoscopic input signals L, R from terminals 1L, 1R respectively, and outputs the respective signals of L/R proportion and R/L proportion. Delay controllers 51L, 51R include a delay circuit, and input the difference signal L-R of L and R from the substracter 2. Then, they control the respective delay time of four- channel stereoscopic rear left and rear right output signals according to the signal from the detection circuit 7.
COPYRIGHT: (C)1989,JPO&Japio
JP62-155779A 1987-06-23 sound field control circuit Pending JPH01900A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62-155779A JPH01900A (en) 1987-06-23 sound field control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62-155779A JPH01900A (en) 1987-06-23 sound field control circuit

Publications (2)

Publication Number Publication Date
JPS64900A true JPS64900A (en) 1989-01-05
JPH01900A JPH01900A (en) 1989-01-05

Family

ID=

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008048083A (en) * 2006-08-14 2008-02-28 Pioneer Electronic Corp Sound regenerating apparatus
JP2008227788A (en) * 2007-03-12 2008-09-25 Alpine Electronics Inc Audio device
FR2954654A1 (en) * 2009-12-23 2011-06-24 Arkamys METHOD OF GENERATING LEFT AND RIGHT SURROUND SIGNAL SIGNALS FROM A SOUND STEREO SIGNAL

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008048083A (en) * 2006-08-14 2008-02-28 Pioneer Electronic Corp Sound regenerating apparatus
JP2008227788A (en) * 2007-03-12 2008-09-25 Alpine Electronics Inc Audio device
US8195316B2 (en) 2007-03-12 2012-06-05 Alpine Electronics, Inc. Audio apparatus
FR2954654A1 (en) * 2009-12-23 2011-06-24 Arkamys METHOD OF GENERATING LEFT AND RIGHT SURROUND SIGNAL SIGNALS FROM A SOUND STEREO SIGNAL
WO2011077040A1 (en) * 2009-12-23 2011-06-30 Arkamys Method of generating left and right surround sound signals on the basis of a stereo sound signal
US9204237B2 (en) 2009-12-23 2015-12-01 Arkamys Method of generating left and right surround signals from a stereo sound signal

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