Digital sine/cosine wave generator

Details Digital sine/cosine wave generator Digital sine/cosine wave generator

2005-05-10

2005-05-10

Malzahn, D. H. (Department: 2124)

Electrical computers: arithmetic processing and calculating

Electrical digital calculating computer

Particular function performed

Reexamination Certificate

active

06892213

ABSTRACT:
A digital sine/cosine wave generator generates discrete values representative of either a sine wave or a cosine wave. The digital sine/cosine wave generator generates sine and/or cosine waves by implementing a difference equation of the form y(n)=b*y(n−2)−y(n−1). One of the initial conditions of the difference equation is selected from a series of values generated by a coefficient generator. The frequency of the sine and/or cosine wave generated by the sine/cosine wave generator is dependent on, and may be selected according to, which of the series of values generated by a coefficient generator is chosen as an initial condition of the difference equation.

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“Sine Waves”, from http://www.interstice.com/˜sdattalo/technical/theory/sinewave.html, 7 pages.
“Digital Sine-Wave Generation Using the TMS320C2xx”. SPRA179, Jul. 1998, Texas Instruments, 63 pages.

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