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JPS5730980A - Sound generating circuit for clock - Google Patents

Sound generating circuit for clock

Info

Publication number
JPS5730980A
JPS5730980A JP10653180A JP10653180A JPS5730980A JP S5730980 A JPS5730980 A JP S5730980A JP 10653180 A JP10653180 A JP 10653180A JP 10653180 A JP10653180 A JP 10653180A JP S5730980 A JPS5730980 A JP S5730980A
Authority
JP
Japan
Prior art keywords
sound generation
frequency
sound
generation period
divider
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
JP10653180A
Other languages
Japanese (ja)
Other versions
JPS6239911B2 (en
Inventor
Shunichi Makuta
Hiroshi Miyasaka
Katsuhiko Takebe
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.)
Rhythm Co Ltd
Original Assignee
Rhythm Watch 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 Rhythm Watch Co Ltd filed Critical Rhythm Watch Co Ltd
Priority to JP10653180A priority Critical patent/JPS5730980A/en
Priority to US06/281,291 priority patent/US4481852A/en
Publication of JPS5730980A publication Critical patent/JPS5730980A/en
Publication of JPS6239911B2 publication Critical patent/JPS6239911B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K15/00—Acoustics not otherwise provided for
    • G10K15/02—Synthesis of acoustic waves
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G13/00—Producing acoustic time signals
    • G04G13/02—Producing acoustic time signals at preselected times, e.g. alarm clocks
    • G04G13/021—Details

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Electromechanical Clocks (AREA)

Abstract

PURPOSE:To generate a sound with a frequency changing repetitively with a displaced sound generation period to provide an imitation sound like a bird and an insect, by giving a reference signal for determining a displaced sound generation period to a frequency dividing ratio selecting counter and driving a speaker according to the output of a program frequency divider. CONSTITUTION:Provided are a generator 10 for a sound generation reference signal with a constant frequency, a program frequency divider 12 that frequency-divides and outputs a sound generation signal with a different frequency dividing ratio according to a prescribed program and a frequency dividing ratio selecting counter 14 that supplies the output of a counter performing repetitive counting with a sound generation period to the divider 12 as a frequency dividing ratio selecting signal and has a sound generation period that displaces in itself with a prescribed repetitive period. Further, a reference signal for determining a displaced sound generation period is supplied to the counter 14 by a reference signal generator 20 for a sound generation period comprising a frequency divider, and according to the output of the divider 12 a speaker 26 is driven, thus allowing a sound generation with a frequency changing repetitively with a displaced sound generation period. This circuit is made to actuate with an alarm signal generated by turning-on of an alarm contact point 30 of a clock 28 through a controlling circuit 32, permitting generation of an imitation sound such as a bird and a insect.
JP10653180A 1980-07-10 1980-08-01 Sound generating circuit for clock Granted JPS5730980A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP10653180A JPS5730980A (en) 1980-08-01 1980-08-01 Sound generating circuit for clock
US06/281,291 US4481852A (en) 1980-07-10 1981-07-07 Sound generating circuit for timepiece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10653180A JPS5730980A (en) 1980-08-01 1980-08-01 Sound generating circuit for clock

Publications (2)

Publication Number Publication Date
JPS5730980A true JPS5730980A (en) 1982-02-19
JPS6239911B2 JPS6239911B2 (en) 1987-08-25

Family

ID=14435967

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10653180A Granted JPS5730980A (en) 1980-07-10 1980-08-01 Sound generating circuit for clock

Country Status (1)

Country Link
JP (1) JPS5730980A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5591765A (en) * 1978-12-29 1980-07-11 Toyota Motor Corp Ignition timing control device for internal combustion engine
JPS6338686A (en) * 1986-07-31 1988-02-19 Nippon Denso Co Ltd Knocking control device for internal combustion engine
DE3933996A1 (en) * 1988-10-11 1990-04-12 Honda Motor Co Ltd KNOCK CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINES
DE3934017A1 (en) * 1988-10-11 1990-04-12 Honda Motor Co Ltd KNOCK CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINES

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5591765A (en) * 1978-12-29 1980-07-11 Toyota Motor Corp Ignition timing control device for internal combustion engine
JPS6338686A (en) * 1986-07-31 1988-02-19 Nippon Denso Co Ltd Knocking control device for internal combustion engine
DE3933996A1 (en) * 1988-10-11 1990-04-12 Honda Motor Co Ltd KNOCK CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINES
DE3934017A1 (en) * 1988-10-11 1990-04-12 Honda Motor Co Ltd KNOCK CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINES
US4960095A (en) * 1988-10-11 1990-10-02 Honda Giken Kogyo Kabushiki Kaisha Knocking control system for internal combustion engines
US4960094A (en) * 1988-10-11 1990-10-02 Honda Giken Kogyo Kabushiki Kaisha Knocking control system for internal combustion engines

Also Published As

Publication number Publication date
JPS6239911B2 (en) 1987-08-25

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