Telephone handset

Electrical audio signal processing systems and devices – Hearing aids – electrical – Specified casing or housing

Reexamination Certificate

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C379S443000

Reexamination Certificate

active

07657049

ABSTRACT:
An improved telephone handset for hearing-impaired persons. A passive device, in the form of an inductor wound about a highly magnetostrictive core, is connected with the speaker in the handset. The device has been found to improve intelligibility of speech delivered by the handset, when perceived by persons afflicted with certain types of hearing impairment.

REFERENCES:
patent: 4160122 (1979-07-01), Jacobson
patent: 4419544 (1983-12-01), Adelman
patent: 6169813 (2001-01-01), Richardson
patent: 6785394 (2004-08-01), Olsen et al.
patent: 2001/0055386 (2001-12-01), Waldron et al.
METGLAS Solutions MICROLITE. Metglas website [online], Jun. 2002 and Aug. 2002 [retrieved on Mar. 1, 2007]. Retreived from the Internet:<URL: http://web.archive.org/web/20020616104539/www.metglas.com/products/page5—1—6—3.htm>, <URL: http://web.archive.org/web/20020622090558/www.metglas.com/products/page5—1—6—3—1.htm>and <URL: http://web.archive.org/web/20020803151934/www.metglas.com/products/page5—1—2—4.htm>.

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