Portable therapeutic apparatus having patient responsive feedbac

Details Portable therapeutic apparatus having patient responsive feedbac Portable therapeutic apparatus having patient responsive feedbac

1977-04-13

1979-03-13

Michell, Robert W.

Surgery

Truss

Perineal

179 1N, 179 1SC, 35 35C, A61B 1900, G09B 1904

Patent

active

041436482

ABSTRACT:
A portable therapeutic instrument includes a microphone to be secured to a patient's throat for monitoring voice level or to a patient's nose for monitoring nasal sounds. An input amplifier includes an automatic gain circuit which essentially flattens the gain curve. An adjustable level detector includes a solid state level detector to generate a square wave signal connected to a logic switching circuit for turning a tone oscillator or other stimulus unit wholly on or off. A second similar channel connected to the input amplifier detects total voiced speech. A switch means connects the oscillator to only the first channel to detect speech above a selected level or to both channels to detect speech only below a selected level. The several channels include time delay circuits permitting normal speech attack and decay. The microphone may also be connected to the patient's nose to monitor nasal sounds.

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patent: 4063550 (1977-12-01), Tiep
patent: 4064869 (1977-12-01), DeFares et al.

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