JPS5771077A - Function-wave generator - Google Patents

Function-wave generator

Info

Publication number
JPS5771077A
JPS5771077A JP55146699A JP14669980A JPS5771077A JP S5771077 A JPS5771077 A JP S5771077A JP 55146699 A JP55146699 A JP 55146699A JP 14669980 A JP14669980 A JP 14669980A JP S5771077 A JPS5771077 A JP S5771077A
Authority
JP
Japan
Prior art keywords
frequency
value
frequency range
periodic function
function wave
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
JP55146699A
Other languages
Japanese (ja)
Inventor
Mitsuhisa Okamoto
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.)
Nippon Denshi Kagaku Co Ltd
Original Assignee
Nippon Denshi Kagaku 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 Nippon Denshi Kagaku Co Ltd filed Critical Nippon Denshi Kagaku Co Ltd
Priority to JP55146699A priority Critical patent/JPS5771077A/en
Publication of JPS5771077A publication Critical patent/JPS5771077A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/02—Digital function generators
    • G06F1/03—Digital function generators working, at least partly, by table look-up
    • G06F1/035—Reduction of table size
    • G06F1/0356—Reduction of table size by using two or more smaller tables, e.g. addressed by parts of the argument

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Electrophonic Musical Instruments (AREA)

Abstract

PURPOSE:To smooth an output waveform by generating a previously given periodic function wave from a low-frequency range to a high-frequency range by equally dividing and storing a given periodic function wave, and outputting stored values successively with time. CONSTITUTION:In ROMs 8 and 9, a value xt obtained by equally dividing a one- period periodic function wave by N on a time axis and converting it into a digital value and its difference DELTAxt from an adjacent value are stored, and each value is read by an address from a ring counter 7. An output frequency (f) is set by a frequency serter 5 and applied to a microprocessor 6, and a clock having a prescribed frequency is generated by a clock oscillator 1 to generate the 1st pulse string having a frequency Nf to be supplied from a frequency multiplier 3 to the counter 7. A frequency multiplier 4, on the other hand, generates the 2nd pulse string, which is applied to the processor 6 for arithmetic. When the set frequency is in a high-frequency range, the analog value of the value xt is applied to an adder 13 through an LPF12 and when in a low-frequency range, it is added to the readout difference DELTAxt to output the sum.
JP55146699A 1980-10-20 1980-10-20 Function-wave generator Pending JPS5771077A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55146699A JPS5771077A (en) 1980-10-20 1980-10-20 Function-wave generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55146699A JPS5771077A (en) 1980-10-20 1980-10-20 Function-wave generator

Publications (1)

Publication Number Publication Date
JPS5771077A true JPS5771077A (en) 1982-05-01

Family

ID=15413549

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55146699A Pending JPS5771077A (en) 1980-10-20 1980-10-20 Function-wave generator

Country Status (1)

Country Link
JP (1) JPS5771077A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6140629A (en) * 1984-07-31 1986-02-26 Reikouon Denki Kk Function signal generator of constant output and infralow frequency
JPH02212794A (en) * 1989-02-10 1990-08-23 Honda Motor Co Ltd frequency modulator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6140629A (en) * 1984-07-31 1986-02-26 Reikouon Denki Kk Function signal generator of constant output and infralow frequency
JPH02212794A (en) * 1989-02-10 1990-08-23 Honda Motor Co Ltd frequency modulator

Similar Documents

Publication Publication Date Title
JPS5291471A (en) Clock pulse generator
US4296384A (en) Noise generator
JPS5429956A (en) Pulse generator
US4223583A (en) Apparatus for producing musical tones having time variant harmonics
FR2088984A5 (en)
JPS5482226A (en) Musical tone generator
JPS5534722A (en) Function generator
CA2211354A1 (en) Waveform generator
JPS5612868A (en) Pwm inverter device
JP3536426B2 (en) Waveform generator
JP2998684B2 (en) Numerically controlled oscillator
JPS54143621A (en) Electronic musical instrument
JPS5549040A (en) Unit time pulse generator
JPS54105519A (en) Electronic musical instrument
JPS5493951A (en) Frequency digital variable pulse generator
SU815900A1 (en) Code-to-harmonic signal frequency converter
JPS5525257A (en) Variable cycle pulse generator
JPS5578342A (en) Random number generation system
JPS5499539A (en) Digital jitter generator
JPS55150028A (en) Clock circuit for digital operation processor
JPS6023359B2 (en) electronic musical instruments
JPS5785142A (en) Random number generating circuit
JPS53100430A (en) Inverter device
JPS5550764A (en) Digital signal receiver
JPS5711503A (en) Frequency synthesizer

Legal Events

Date Code Title Description
A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20060620

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20060817

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20061128

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20070125

A911 Transfer of reconsideration by examiner before appeal (zenchi)

Free format text: JAPANESE INTERMEDIATE CODE: A911

Effective date: 20070215

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20070306

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20070319

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100413

Year of fee payment: 3

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110413

Year of fee payment: 4

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120413

Year of fee payment: 5

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130413

Year of fee payment: 6

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140413

Year of fee payment: 7