JPS5560881A - Time announcing sound generator - Google Patents

Time announcing sound generator

Info

Publication number
JPS5560881A
JPS5560881A JP13486378A JP13486378A JPS5560881A JP S5560881 A JPS5560881 A JP S5560881A JP 13486378 A JP13486378 A JP 13486378A JP 13486378 A JP13486378 A JP 13486378A JP S5560881 A JPS5560881 A JP S5560881A
Authority
JP
Japan
Prior art keywords
circuit
signal
damped oscillation
filter
signals
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
JP13486378A
Other languages
Japanese (ja)
Inventor
Hiroshi Itoyama
Minoru Kuroda
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP13486378A priority Critical patent/JPS5560881A/en
Publication of JPS5560881A publication Critical patent/JPS5560881A/en
Pending legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)

Abstract

PURPOSE:To making the tone of sounds uniform, by providing a filter curcuit between a signal synthesis circuit and mixing circuit. CONSTITUTION:A filter circuit 1, which comprises a capacitor C and resister R1, R2 and allows only necessary spectral components to pass, is coupled in series between a mixing circuit 2 and a synthesis circuit 3 for a plurality of signals f1, f2. These signals are synthesized with each other by the synthesis circuit 3. The synthetic signal is removed of unnecessary frequency components and then applied as a carrier to the mixing circuit 2, in which the signal is mixed with a damped oscillation signal of a damped oscillation circuit 4 through damped oscillation. The mixed signal is amplified by an amplifier 5 and then applied to a sound converter 7, which makes a time announcing sound which is not affected by the frequency characteristic of the converter 7 and has a tone determined by the frequency chatacteristic of the filter circuit 1 and attenuates with a degree equal to that of the damped oscillation signal.
JP13486378A 1978-10-31 1978-10-31 Time announcing sound generator Pending JPS5560881A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13486378A JPS5560881A (en) 1978-10-31 1978-10-31 Time announcing sound generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13486378A JPS5560881A (en) 1978-10-31 1978-10-31 Time announcing sound generator

Publications (1)

Publication Number Publication Date
JPS5560881A true JPS5560881A (en) 1980-05-08

Family

ID=15138223

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13486378A Pending JPS5560881A (en) 1978-10-31 1978-10-31 Time announcing sound generator

Country Status (1)

Country Link
JP (1) JPS5560881A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59120883A (en) * 1982-12-27 1984-07-12 Rhythm Watch Co Ltd Electronic tone generating circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59120883A (en) * 1982-12-27 1984-07-12 Rhythm Watch Co Ltd Electronic tone generating circuit

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