Piezoelectric warbler
AssigneeYosemite Investment, Inc.
InventorGeorge Alan Burnett
Life of this patent
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Abstract
An electronic audio circuit operates a piezoelectric audio transducer to produce a two-tone warbling audio output. The electronic circuit includes an integrated circuit double timer and integrated circuit logic gates. One timer produces a toggling frequency that operates a toggling circuit composed of a logic gate to electrically connect and disconnect an electrical component from a frequency determining network to produce two frequency determining networks. The other timer produces two tones depending upon which frequency determining network is electrically connected to the other timer. The two tone are buffered and then drive a two-element piezoelectric transducer.
Claims18
A warbling piezoelectric audio circuit, comprising:
- (a) a single audio oscillator having a first frequency determining network to produce a first audio frequency and a second frequency determining network to produce a second audio frequency;
- (b) a toggling timer producing a toggling frequency that is used to control the rate at which the single audio oscillator produces the first audio frequency and the second audio frequency;
- (c) a piezoelectric transducer receiving from the single audio oscillator the first audio frequency for a predetermined period of time determined by the toggling frequency and receiving the second audio frequency for another predetermined period of time determined by the toggling frequency to produce a warbling audio signal;
- and,
- (d) a toggling circuit logic gate receiving the toggling frequency from the toggling timer to electrically connect the second frequency determining network to the single audio oscillator to provide the second audio frequency to the piezoelectric transducer to produce the second audio frequency for a predetermined period of time determined by the toggling frequency and electrically disconnect the second audio frequency network from the single audio oscillator to provide the first audio frequency to the piezoelectric transducer to produce the first audio frequency for another predetermined period of time determined by the toggling frequency.
A method of producing a warbling piezoelectric audio signal, comprising the steps of:
- (a) providing a single audio oscillator having a first frequency determining network to produce a first audio frequency and a second frequency determining network to produce a second audio frequency;
- (b) providing a toggling timer to produce a toggling frequency;
- (c) providing a piezoelectric transducer receiving the first audio frequency for a predetermined period of time determined by the toggling frequency and receiving the second audio frequency for another predetermined period of time determined by the toggling frequency to produce a warbling audio signal;
- (d) connecting electrically the second frequency determining network to the single audio oscillator to produce the second audio frequency for a predetermined period of time determined by the toggling frequency;
- and,
- (e) disconnecting electrically the second frequency determining network from the single audio oscillator to produce the first audio frequency for another predetermined period of time determined by the toggling frequency.
Dependencies are inferred from the claim text.