| 摘要 |
The size, power, and speed constraints in digital sinusoidal waveform generators using values stored in a read-only-memory are alleviated by storing the required values in two smaller read-only-memory devices containing a primary amplitude value and a secondary amplitude value, and a third read-only-memory containing corrective values, the total number of values in the three read-only-memory devices being reduced over the number in a single read-only-memory. The primary and secondary values are combined in accordance with disclosed trigonometric identities in response to a repetitive binary count, and the corrective values are added as determined by logic circuitry responding to the same binary count.
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