JPS5675755A - Music box for telephone - Google Patents

Music box for telephone

Info

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
Application number
JP15238079A
Other languages
Japanese (ja)
Inventor
Iwao Sagara
Akitoshi Matsuo
Ryuichi Iketani
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.)
Oki Electric Industry Co Ltd
Original Assignee
Oki Electric Industry 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 Oki Electric Industry Co Ltd filed Critical Oki Electric Industry Co Ltd
Priority to JP15238079A priority Critical patent/JPS5675755A/en
Publication of JPS5675755A publication Critical patent/JPS5675755A/en
Pending legal-status Critical Current

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.
JP15238079A 1979-11-27 1979-11-27 Music box for telephone Pending JPS5675755A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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