JPS5477595A - Attenuation signal generating circuit - Google Patents

Attenuation signal generating circuit

Info

Publication number
JPS5477595A
JPS5477595A JP14524977A JP14524977A JPS5477595A JP S5477595 A JPS5477595 A JP S5477595A JP 14524977 A JP14524977 A JP 14524977A JP 14524977 A JP14524977 A JP 14524977A JP S5477595 A JPS5477595 A JP S5477595A
Authority
JP
Japan
Prior art keywords
goes
time
terminal
sound
switch
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
JP14524977A
Other languages
Japanese (ja)
Inventor
Hiroshi Kito
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 Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP14524977A priority Critical patent/JPS5477595A/en
Publication of JPS5477595A publication Critical patent/JPS5477595A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To obtain signals having natural striking sound and reverberation parts by pulse signals and subsequent charge and discharge signals.
CONSTITUTION: When a switch 1 is closed, a transistor T2 goes ON through a capacitor C1 and resistance R2. At this time, the collector of T3 forcefully goes ON and a monostable multi (consisting of T3 , T4R3 thru R6 and C2) goes ON for a fixed time. At the same time, T5 goes ON through R7 to turn ON T6 and in the ON time thereof, C3 is charged through T6 and R10. At the same instant of the monostable multi OFF, C3 changes over to discharging. However, the output signal obtainable at terminal 4 via R11 and T7 is superposed with the pulse signal generated by T6 and the charge and discharge voltages of C3. At this time, T8 is turned ON and OFF according to oscillation frequencies through R13 from an oscillator 3, the actual output appearing at the terminal 4 is modulated and becomes the damping sound resembling to striking sound. When the switch 1 is turned OFF, the damping sound is produced at the terminal 4 in a similar manner. Hence, chime sound may be produced because the voltages are applied to the frequency changeover terminal of the oscillator at the same instant of turning ON of the switch 1.
COPYRIGHT: (C)1979,JPO&Japio
JP14524977A 1977-12-02 1977-12-02 Attenuation signal generating circuit Pending JPS5477595A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14524977A JPS5477595A (en) 1977-12-02 1977-12-02 Attenuation signal generating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14524977A JPS5477595A (en) 1977-12-02 1977-12-02 Attenuation signal generating circuit

Publications (1)

Publication Number Publication Date
JPS5477595A true JPS5477595A (en) 1979-06-21

Family

ID=15380757

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14524977A Pending JPS5477595A (en) 1977-12-02 1977-12-02 Attenuation signal generating circuit

Country Status (1)

Country Link
JP (1) JPS5477595A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6184693A (en) * 1984-10-02 1986-04-30 松下電器産業株式会社 Chime tone generator

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51141591A (en) * 1975-05-31 1976-12-06 Iwatsu Electric Co Ltd Electronic chime circuit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51141591A (en) * 1975-05-31 1976-12-06 Iwatsu Electric Co Ltd Electronic chime circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6184693A (en) * 1984-10-02 1986-04-30 松下電器産業株式会社 Chime tone generator

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