Electrical audio signal processing systems and devices – Monitoring/measuring of audio devices – Loudspeaker operation
Patent
1986-07-15
1988-02-16
Kemeny, Emanuel S.
Electrical audio signal processing systems and devices
Monitoring/measuring of audio devices
Loudspeaker operation
381 70, G10L 500
Patent
active
047260661
ABSTRACT:
A touch switch contacts on a unit housing are bridged by the fingers of a person's hand when holding the housing to trigger operation of a signal generating oscillator driving a transducer from which "voice" sound is generated and transmitted through a sound tube into the person's mouth for articulation of speech. The oscillator is operated at a low duty cycle for moderate battery consumption when the sound tube is extended from a retracted storage position within a recess formed in the housing.
REFERENCES:
patent: 3084221 (1963-04-01), Cooper
patent: 4338488 (1982-07-01), Lennox
Kemeny Emanuel S.
P. O. Vox Medical, Inc.
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