JPS57114738A - Sound device for vehicle - Google Patents

Sound device for vehicle

Info

Publication number
JPS57114738A
JPS57114738A JP60581A JP60581A JPS57114738A JP S57114738 A JPS57114738 A JP S57114738A JP 60581 A JP60581 A JP 60581A JP 60581 A JP60581 A JP 60581A JP S57114738 A JPS57114738 A JP S57114738A
Authority
JP
Japan
Prior art keywords
characteristic curve
level
sound volume
noise
accordance
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
JP60581A
Other languages
Japanese (ja)
Other versions
JPS642287B2 (en
Inventor
Fukashi Sugasawa
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.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor 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 Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP60581A priority Critical patent/JPS57114738A/en
Publication of JPS57114738A publication Critical patent/JPS57114738A/en
Publication of JPS642287B2 publication Critical patent/JPS642287B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Control Of Amplification And Gain Control (AREA)

Abstract

PURPOSE: To easily set a desired characteristic curve in accordance with a level of noise, in a sound device outputting voice and music, by newly setting a sound volume characteristic curve in accordance with the level of noise on the basis of a moving sound volume characteristic curve and desired sound volume value.
CONSTITUTION: When a level of noise N is larger than a minimum audible level of sound volume NO, an AND circuit 14 is opened by output of an inverter 22 to change output (a) of an AD converter 18. Consequently, when assumed AR for an ideal curve suitable for a fondness of the crew and A1 for the present characteristic curve, because of low sound volume B for the level of noise N=N1, an up-down counter 17 adds a pulse of a pulse generator circuit 7 in accordance with the on-time of an upswitch 10, and output BO of a DA converter 19 is changed to obtain a characteristic curve A2 equal to the ideal curve AR at N1. Then, if increased to N2, the switch 10 is again turned on to obtain a characteristic curve A3a.
COPYRIGHT: (C)1982,JPO&Japio
JP60581A 1981-01-06 1981-01-06 Sound device for vehicle Granted JPS57114738A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60581A JPS57114738A (en) 1981-01-06 1981-01-06 Sound device for vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60581A JPS57114738A (en) 1981-01-06 1981-01-06 Sound device for vehicle

Publications (2)

Publication Number Publication Date
JPS57114738A true JPS57114738A (en) 1982-07-16
JPS642287B2 JPS642287B2 (en) 1989-01-17

Family

ID=11478357

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60581A Granted JPS57114738A (en) 1981-01-06 1981-01-06 Sound device for vehicle

Country Status (1)

Country Link
JP (1) JPS57114738A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03279043A (en) * 1990-03-28 1991-12-10 Mazda Motor Corp Sound device for vehicle

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2583819Y2 (en) * 1992-03-06 1998-10-27 新神戸電機株式会社 Lightning display board

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03279043A (en) * 1990-03-28 1991-12-10 Mazda Motor Corp Sound device for vehicle

Also Published As

Publication number Publication date
JPS642287B2 (en) 1989-01-17

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