JPS6473808A - Sine wave oscillator - Google Patents
Sine wave oscillatorInfo
- 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
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.
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)
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 |
-
1987
- 1987-09-14 JP JP23022887A patent/JPS6473808A/en active Pending
Cited By (5)
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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