JPS6473808A - Sine wave oscillator - Google Patents

Sine wave oscillator

Info

Publication number
JPS6473808A
JPS6473808A JP23022887A JP23022887A JPS6473808A JP S6473808 A JPS6473808 A JP S6473808A JP 23022887 A JP23022887 A JP 23022887A JP 23022887 A JP23022887 A JP 23022887A JP S6473808 A JPS6473808 A JP S6473808A
Authority
JP
Japan
Prior art keywords
multiplier
output
oscillatory
delay apparatus
delayed
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
JP23022887A
Other languages
Japanese (ja)
Inventor
Haruhiro Shiino
Yasuo Shoji
Kenji Horiguchi
Kazuhiro Watanabe
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 JP23022887A priority Critical patent/JPS6473808A/en
Publication of JPS6473808A publication Critical patent/JPS6473808A/en
Pending legal-status Critical Current

Links

Landscapes

  • Oscillators With Electromechanical Resonators (AREA)
  • Electrophonic Musical Instruments (AREA)

Abstract

PURPOSE:To suppress the change of an oscillatory frequency for the change of the coefficient of a multiplier to a small value in case where the oscillatory frequency is remarkably lower than a sampling frequency and to set an arbitrary frequency with a few number of hardware, by providing third and fourth adders and the multiplier in a sine wave oscillator using a second-order circulation type filter. CONSTITUTION:The third and fourth adders 24 and 25 and the multiplier 28 are provided. Oscillation is started by adding a unit impulse string delta(n) on an input terminal 20. Since a delay apparatus 26 delays the output of the multiplier 28 by the time of the coefficient Z<-1> after starting the oscillation, delayed output is added on the output of the multiplier 28 by the adder 24, and after an added result is delayed again by the delay apparatus 26, it is supplied to multiplier 29 and 30 sides. Similarly, a delay apparatus 27 also delays the output of the multiplier 29, and the delayed output is added on the output of the multiplier 29 by the adder 25, and after the added result is delayed again by the delay apparatus 27, it is supplied to the multiplier 31 side. When an oscillatory state is stabilized, the sine wave oscillatory waveform of an output sample string y(n) is outputted from an output terminal 21.
JP23022887A 1987-09-14 1987-09-14 Sine wave oscillator Pending JPS6473808A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23022887A JPS6473808A (en) 1987-09-14 1987-09-14 Sine wave oscillator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23022887A JPS6473808A (en) 1987-09-14 1987-09-14 Sine wave oscillator

Publications (1)

Publication Number Publication Date
JPS6473808A true JPS6473808A (en) 1989-03-20

Family

ID=16904551

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23022887A Pending JPS6473808A (en) 1987-09-14 1987-09-14 Sine wave oscillator

Country Status (1)

Country Link
JP (1) JPS6473808A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04302511A (en) * 1991-03-29 1992-10-26 Yamaha Corp Sine wave generator
EP0540158A2 (en) * 1991-10-31 1993-05-05 Advanced Micro Devices, Inc. Apparatus for generating a sinusoidal output signal
WO2001041295A1 (en) * 1999-12-03 2001-06-07 Nokia Networks Oy Digital ramp generator with output power level controller

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04302511A (en) * 1991-03-29 1992-10-26 Yamaha Corp Sine wave generator
EP0540158A2 (en) * 1991-10-31 1993-05-05 Advanced Micro Devices, Inc. Apparatus for generating a sinusoidal output signal
EP0540158B1 (en) * 1991-10-31 1998-03-04 Advanced Micro Devices, Inc. Apparatus for generating a sinusoidal output signal
WO2001041295A1 (en) * 1999-12-03 2001-06-07 Nokia Networks Oy Digital ramp generator with output power level controller
US6380875B2 (en) 1999-12-03 2002-04-30 Nokia Networks Oy Digital ramp generator with output power level controller

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