Frequency-matched signal device for persons with impaired hearin

Details Frequency-matched signal device for persons with impaired hearin Frequency-matched signal device for persons with impaired hearin

1980-11-28

1986-12-23

Yusko, Donald J.

Communications: electrical

Systems

Plural

340384E, G08B 310

Patent

active

046315179

ABSTRACT:
A frequency-matched signal device for persons with impaired hearing, including an activating member (1,2,3), a signal generator (4) activated thereby for producing an electrical signal with a fundamental frequency which is within the range of audibility of a person having a normal sense of hearing, and an amplifier (10) having a loudspeaker (6) connected after it for amplifying the signal into an acoustic signal. A first device (P1) permits an optional setting of the fundamental frequency of the signal generator; a second device (P3, R1; 13,14,15) permits an optional setting of the signal generator so that it will deliver at least one additional electrical signal of at least one second frequency which is optionally adjustable and related to the fundamental frequency. The additional second signal or signals, respectively, is (are) amplified in the amplifier and an alternator (8) which is connected to the signal generator causes the electrical output signal of the signal generator to alternate between said frequencies at a predetermined slow rate.

REFERENCES:
patent: 4179690 (1979-12-01), Nicholls
G. Swain--"Heathkit Model TD-1089 Electronic Chimes Unit", Electronics, Australia Feb. 1977, pp. 56-59.
R. E. Cousino "IC Doorbell Plays Your Song" Radio Electronics Sep. 1975, vol. 46, No. 9, pp. 33-35; 104 Reprinted by Inspec.

Affiliated with

Also associated with

Rating

Frequency-matched signal device for persons with impaired hearin does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Frequency-matched signal device for persons with impaired hearin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Frequency-matched signal device for persons with impaired hearin will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-174141