JPS5675755A - Music box for telephone - Google Patents
Music box for telephoneInfo
- Publication number
- JPS5675755A JPS5675755A JP15238079A JP15238079A JPS5675755A JP S5675755 A JPS5675755 A JP S5675755A JP 15238079 A JP15238079 A JP 15238079A JP 15238079 A JP15238079 A JP 15238079A JP S5675755 A JPS5675755 A JP S5675755A
- Authority
- JP
- Japan
- Prior art keywords
- music
- sound
- memory device
- signal
- circuit
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M19/00—Current supply arrangements for telephone systems
- H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
- H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Electrophonic Musical Instruments (AREA)
- Telephone Set Structure (AREA)
Abstract
PURPOSE:To avoid the disturbance of sound and to enable to record a music with an arbitrary length, by using a semiconductor memory device of cell drive and producing the melody electronically. CONSTITUTION:The clock frequency produced at a generation circuit 9 is fed to a frequency division circuit and a counter in a control circuit 10 to form an address signal 12 which selects the memory address of a memory device 13. A digital signal 14 encoding the music sound read out from the memory device 13 and the frequency signal being the base of the music sound fed from the control circuit 10 are input to a synthesis circuit 15 to synthesize the music signal, which is amplified at an amplifier 16, and converted into sound at a speaker 17 to produce a melody tone 7.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15238079A JPS5675755A (en) | 1979-11-27 | 1979-11-27 | Music box for telephone |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15238079A JPS5675755A (en) | 1979-11-27 | 1979-11-27 | Music box for telephone |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5675755A true JPS5675755A (en) | 1981-06-23 |
Family
ID=15539255
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15238079A Pending JPS5675755A (en) | 1979-11-27 | 1979-11-27 | Music box for telephone |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5675755A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS583659U (en) * | 1981-06-29 | 1983-01-11 | 松下電器産業株式会社 | telephone stand |
JPS6392453U (en) * | 1986-12-03 | 1988-06-15 |
-
1979
- 1979-11-27 JP JP15238079A patent/JPS5675755A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS583659U (en) * | 1981-06-29 | 1983-01-11 | 松下電器産業株式会社 | telephone stand |
JPS6392453U (en) * | 1986-12-03 | 1988-06-15 |
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