Speech aid for laryngectomy patients

Details Speech aid for laryngectomy patients Speech aid for laryngectomy patients

A - Human Necessities

61

F

84/77

A61F 2/20 (2006.01)

Patent

CA 1252653

SPEECH AID FOR LARYNGECTOMY PATIENTS ABSTRACT A speech aid for laryngectomy patients is described and comprises an electromechanical transformer with a power output stage connected upstream, a pulse generator for the production of a basic frequency, manually operated switches and electrical filters designed to vary the pulse frequency as a function of time. The power output stage in this respect comprises an electronic switch which is controlled by the basic frequency and a controlling pulse generator which switches the electronic switch off at least with temporal priority over the basic frequency.

515902

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