JPS57207907A - Melody generating device - Google Patents
Melody generating deviceInfo
- 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
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
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)
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 |
-
1981
- 1981-06-18 JP JP9431581A patent/JPS57207907A/en active Pending
Patent Citations (3)
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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