JPS57207907A - Melody generating device - Google Patents

Melody generating device

Info

Publication number
JPS57207907A
JPS57207907A JP9431581A JP9431581A JPS57207907A JP S57207907 A JPS57207907 A JP S57207907A JP 9431581 A JP9431581 A JP 9431581A JP 9431581 A JP9431581 A JP 9431581A JP S57207907 A JPS57207907 A JP S57207907A
Authority
JP
Japan
Prior art keywords
melody
sound
integrated circuit
accordance
parallel
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
JP9431581A
Other languages
Japanese (ja)
Inventor
Koji Ishizawa
Hiromitsu Mitsui
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.)
Seiko Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
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 Seiko Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP9431581A priority Critical patent/JPS57207907A/en
Publication of JPS57207907A publication Critical patent/JPS57207907A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To obtain the titled device which is suitable for tools specially prepared for Christmas and can exhibit effects of sound and lighting, by adding lighting equipment to a semiconductor melody generating device.
CONSTITUTION: It is arranged that capacitors for envelope C1 and C2 and resistances R1 and R2 are connected to a melody integrated circuit SVM 7910 in parallel and any sounds in melodies can be reproduced as soft sounds in accordance with the CR time constant. The main melody of an envelope terminal of the integrated circuit is inputted into a trasistor (TR) T4 after it is amplified at a TR T3 through a resistance R8 and level-detected at a diode D. When light emission diodes LED1WLED5 are connected to the load of the TR T4 in parallel the strength of the light can be changed in accordance with the stress of the sound, and, therefore, this device can be used at home as a device which exhibits variable illumination.
COPYRIGHT: (C)1982,JPO&Japio
JP9431581A 1981-06-18 1981-06-18 Melody generating device Pending JPS57207907A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9431581A JPS57207907A (en) 1981-06-18 1981-06-18 Melody generating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9431581A JPS57207907A (en) 1981-06-18 1981-06-18 Melody generating device

Publications (1)

Publication Number Publication Date
JPS57207907A true JPS57207907A (en) 1982-12-20

Family

ID=14106834

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9431581A Pending JPS57207907A (en) 1981-06-18 1981-06-18 Melody generating device

Country Status (1)

Country Link
JP (1) JPS57207907A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5111868A (en) * 1974-07-18 1976-01-30 Idemitsu Kosan Co
JPS5328826A (en) * 1976-08-28 1978-03-17 Kubota Ltd Air valve
JPS5393668A (en) * 1977-01-27 1978-08-16 Suikoushiya Kk Music lighting apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5111868A (en) * 1974-07-18 1976-01-30 Idemitsu Kosan Co
JPS5328826A (en) * 1976-08-28 1978-03-17 Kubota Ltd Air valve
JPS5393668A (en) * 1977-01-27 1978-08-16 Suikoushiya Kk Music lighting apparatus

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