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Title: Tone signal generator for producing multioperator tone signals using an operator circuit including a waveform generator, a selector and an enveloper

A frequency modulation (FM) tone signal generator for generating a FM tone signal is disclosed. The tone signal generator includes a waveform generator having a plurality of wave tables, a selector and an enveloper. The waveform generator furnishes a waveform signal in response to a phase angle address signal. Each wave table stores a different waveform. The selector selects one of the wave tables in response to a plurality of selection signals such that the selected wave table largely provides the waveform signal upon being addressed largely by the phase angle address signal. Selection of the selected wave table varies with each selection signal. The enveloper impresses an envelope signal on the waveform signal. The envelope signal is used as a carrier or modulator for generating the FM tone signal.
 [1];  [1];  [1]
  1. (Austin, TX)
Issue Date:
OSTI Identifier:
Crystal Semiconductor Corporation (Austin, TX) ORNL
Patent Number(s):
US 5665929
Contract Number:
Research Org:
Country of Publication:
United States
tone; signal; generator; producing; multioperator; signals; operator; circuit; including; waveform; selector; enveloper; frequency; modulation; fm; generating; disclosed; plurality; wave; tables; furnishes; response; phase; angle; address; table; stores; selects; selection; selected; provides; addressed; varies; impresses; envelope; carrier; modulator; tone signal; circuit including; phase angle; signal generator; waveform generator; frequency modulation; envelope signal; selected wave; /84/