Tone generating circuit

Details Tone generating circuit Tone generating circuit

1995-10-11

1998-05-19

Peng, John K.

Communications: electrical

Audible indication

Electronic

84694, 84697, G10K 912

Patent

active

057540950

ABSTRACT:
A tone generating circuit for delivering power to a speaker modulated fourth harmonic audio square wave signal by its fundamental to produce a modulated audio signal within a selected frequency range. The tone generating circuit may be incorporated in a power delivering circuit that supplies a pulse width modulated audio signal to a speaker in one mode of operation, a fourth harmonic modulated audio signal in a second mode of operation, and a square wave audio signal in a third mode of operation.

REFERENCES:
patent: 3424989 (1969-01-01), Erath et al.
patent: 3504364 (1970-03-01), Abel
patent: 4001816 (1977-01-01), Yamada et al.
patent: 4100543 (1978-07-01), Stockdate et al.
patent: 4175463 (1979-11-01), Deutsch
patent: 4204200 (1980-05-01), Beyl, Jr.
patent: 4293851 (1981-10-01), Beyl, Jr.
patent: 4363028 (1982-12-01), Basnak
patent: 4401975 (1983-08-01), Ferguson et al.
patent: 4486742 (1984-12-01), Kudo et al.
patent: 4724424 (1988-02-01), Nakashima et al.

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