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

Patent · Wed Jan 01 00:00:00 EST 1997

OSTI ID:871141

Dong, Qiujie ^[1]; Jenkins, Michael V ^[1]; Bernadas, Salvador R ^[1]

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1. Austin, TX

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.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• DOE Contract Number: AC05-84OR21400
• Assignee: Crystal Semiconductor Corporation (Austin, TX)
• Patent Number(s): US 5665929
• OSTI ID: 871141
• Country of Publication: United States
• Language: English

Related Subjects

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
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