JPS57112174A - System for generating digital audible tone - Google Patents

System for generating digital audible tone

Info

Publication number
JPS57112174A
JPS57112174A JP55187332A JP18733280A JPS57112174A JP S57112174 A JPS57112174 A JP S57112174A JP 55187332 A JP55187332 A JP 55187332A JP 18733280 A JP18733280 A JP 18733280A JP S57112174 A JPS57112174 A JP S57112174A
Authority
JP
Japan
Prior art keywords
changing
control data
rom7
circuit
digital audible
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.)
Granted
Application number
JP55187332A
Other languages
Japanese (ja)
Other versions
JPH0123026B2 (en
Inventor
Masatoshi Kumagai
Yasunori Ogawa
Takashi Hatano
Yasutsugu Nagahama
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP55187332A priority Critical patent/JPS57112174A/en
Publication of JPS57112174A publication Critical patent/JPS57112174A/en
Publication of JPH0123026B2 publication Critical patent/JPH0123026B2/ja
Granted 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
    • H04M19/023—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone by reversing the polarity of the current at the exchange

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)

Abstract

PURPOSE:To obtain a digital audible tone generating device which is adapted to control method corresponding to various symmetries without changing the circuit, by changing write data of a control data ROM. CONSTITUTION:An ROM7 for control data storage is provided newly, and control data corresponding to each symmetry is stored there, and contents of the ROM7 are decoded by a control circuit 8 to perform operations such as code inversion, UP/DOWN switching, count inhibition as required. Consequently, all digital audible tones different in frequency, symmetry, and the number of samples are generated without changing the circuit only by changing data recorded in the control data ROM7.
JP55187332A 1980-12-29 1980-12-29 System for generating digital audible tone Granted JPS57112174A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55187332A JPS57112174A (en) 1980-12-29 1980-12-29 System for generating digital audible tone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55187332A JPS57112174A (en) 1980-12-29 1980-12-29 System for generating digital audible tone

Publications (2)

Publication Number Publication Date
JPS57112174A true JPS57112174A (en) 1982-07-13
JPH0123026B2 JPH0123026B2 (en) 1989-04-28

Family

ID=16204140

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55187332A Granted JPS57112174A (en) 1980-12-29 1980-12-29 System for generating digital audible tone

Country Status (1)

Country Link
JP (1) JPS57112174A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55115770A (en) * 1979-02-28 1980-09-05 Toshiba Corp Tone signal production system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55115770A (en) * 1979-02-28 1980-09-05 Toshiba Corp Tone signal production system

Also Published As

Publication number Publication date
JPH0123026B2 (en) 1989-04-28

Similar Documents

Publication Publication Date Title
JPS55130587A (en) Guitar using molding method
JPS5334421A (en) Automatic reade for bar code
JPS5296526A (en) Presetter for electronic musical instruments
JPS5349420A (en) Electronic musical instrument
JPS57112174A (en) System for generating digital audible tone
JPS5495224A (en) Electronic musical instrument
JPS5553397A (en) Note scaling circuit for digital musical instrument
NO162938C (en) PROCEDURE AND DEVICE FOR SIMULTAN TONE CODING.
JPS5729100A (en) Method of modifying voice signal divided into signal segments for encoding transmission and device for executing same method
JPS51114909A (en) Magnetic recording equipment
JPS51135326A (en) Key signal distinctional block
IT8023791A0 (en) APPARATUS FOR FREQUENCY MULTIPLATION WITH SINGLE SIDEBAND AND BY MEANS OF NUMERICAL PROCESSING.
JPS5534378A (en) Automatic performing unit of electronic musical instrument
JPS522338A (en) Most suitable standard degree selecting equipment
JPS53103721A (en) Electronic instrument
JPS56149100A (en) Sound source circuit for voice synthesizer
JPS5381019A (en) Control system for variable length data access
JPS5727365A (en) Scalar readout control system of vector register
JPS524814A (en) Electronic musical instrument
JPS56153876A (en) Tone transmission system
JPS5684055A (en) Setting method for conversion code of code converter
JPS5258911A (en) Electronic musical instrument
JPS57109998A (en) Parcor type sound synthesizer
JPS5684525A (en) Analyzing device for excitation of periodic wave
DE3167145D1 (en) Signal synthesizer apparatus