JPS57131197A - Mobile stereophonic reproducing system - Google Patents

Mobile stereophonic reproducing system

Info

Publication number
JPS57131197A
JPS57131197A JP56015186A JP1518681A JPS57131197A JP S57131197 A JPS57131197 A JP S57131197A JP 56015186 A JP56015186 A JP 56015186A JP 1518681 A JP1518681 A JP 1518681A JP S57131197 A JPS57131197 A JP S57131197A
Authority
JP
Japan
Prior art keywords
cut
frequency
acoustic
low
acoustic pressure
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
JP56015186A
Other languages
Japanese (ja)
Other versions
JPH0140559B2 (en
Inventor
Shigeki Kato
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.)
Denso Ten Ltd
Original Assignee
Denso Ten 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 Denso Ten Ltd filed Critical Denso Ten Ltd
Priority to JP56015186A priority Critical patent/JPS57131197A/en
Publication of JPS57131197A publication Critical patent/JPS57131197A/en
Publication of JPH0140559B2 publication Critical patent/JPH0140559B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic

Landscapes

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

Abstract

PURPOSE:To obtain a stereophonic sound having characteristics whose acoustic pressure in the car is flat extending over a wide frequency range, by dividing an audio frequency signal into 2 high and low acoustic areas by use of a filter, and selecting its cut-off frequency and frequency characteristics of the cut-off part. CONSTITUTION:An audio frequency signal is made to pass through high pass filters 13, 14, a high band signal is applied to left and right channel loudspeakers 6, 8, also both left and right signals are mixed by a mixing circuit 15, and after that, a low band signal is applied to a center woofer loudspeaker 11 through a low-pass filter 16. When the cut-off frequency of the filters 13, 14 and 16 is selected to about 250Hz by which acoustic pressure in the car rises abnormally, and also the damping characteristics in the cut-off part are selected suitably, acoustic pressure in a free space becomes 23, 24 in the low acoustic band and the high acoustic band, respectively, and although the dropped characteristics are shown as 26 in the proximity of the cut-off frequency, the acoustic pressure becomes flat as 25 in the car, therefore, a stereophonic sound having the excellent reproducing characteristics are reproduced.
JP56015186A 1981-02-03 1981-02-03 Mobile stereophonic reproducing system Granted JPS57131197A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56015186A JPS57131197A (en) 1981-02-03 1981-02-03 Mobile stereophonic reproducing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56015186A JPS57131197A (en) 1981-02-03 1981-02-03 Mobile stereophonic reproducing system

Publications (2)

Publication Number Publication Date
JPS57131197A true JPS57131197A (en) 1982-08-13
JPH0140559B2 JPH0140559B2 (en) 1989-08-29

Family

ID=11881795

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56015186A Granted JPS57131197A (en) 1981-02-03 1981-02-03 Mobile stereophonic reproducing system

Country Status (1)

Country Link
JP (1) JPS57131197A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60214700A (en) * 1984-04-11 1985-10-26 Sony Corp Stereo reproduction system
JPS60254996A (en) * 1984-05-31 1985-12-16 Pioneer Electronic Corp On-vehicle sound field correction system
US4622691A (en) * 1984-05-31 1986-11-11 Pioneer Electronic Corporation Mobile sound field correcting device
CN109218918A (en) * 2017-06-29 2019-01-15 恩智浦有限公司 audio processor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60214700A (en) * 1984-04-11 1985-10-26 Sony Corp Stereo reproduction system
JPS60254996A (en) * 1984-05-31 1985-12-16 Pioneer Electronic Corp On-vehicle sound field correction system
US4622691A (en) * 1984-05-31 1986-11-11 Pioneer Electronic Corporation Mobile sound field correcting device
CN109218918A (en) * 2017-06-29 2019-01-15 恩智浦有限公司 audio processor
CN109218918B (en) * 2017-06-29 2022-07-15 恩智浦有限公司 Audio processor

Also Published As

Publication number Publication date
JPH0140559B2 (en) 1989-08-29

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