Accession Number : ADD001376

Title :   Device for Changing Pitch of an Audio Signal to Improve Intelligibility.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Dildy,Clell A , Jr

Report Date : 06 Aug 1974

Pagination or Media Count : 10

Abstract : The patent describes a speech decoder which improves the intelligibility of human speech in a helium or helium-oxygen atmosphere, such as those found, for example, in undersea habitats disposed at various and sundry water depths or other ambient environmental pressures that are considerably greater than the earth's typical atmospheric pressure.

Descriptors :   *Intelligibility, *Signal processing, *Patents, Voice communications, Speech, Sound pitch, Scalers, Decoders, Helium, Underwater communications

Subject Categories : Voice Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE