telephone 6, a bone conduction speaker 2 that is placed in press contact with part of a head at use, a main body unit 4 provided with an amplifier and a battery, and fixing means 7-9 that fit the microphone 1, the bone conduction speaker 2 and the main body unit 4 to the ...
White Wall MountCapTel UTI-2400i 40 dB Captioned Phone Wall MountCLEAR SOUNDS Amplified BigButton Spkrphone 50dB White TabletopAegis 80123 Emergency Phone Wall MountSMPL Hands-Free Dial Photo Memory Big Button Phone for Seniors - One-Touch Dialing, Large Buttons, Hearing Impaired Phones for Elderl...
CHARGER WITH LOUDSPEAKER FOR PORTABLE TELEPHONE SET WITH BUILT-IN RADIO RECEIVER portable telephone set, a sound plug 13 that connects the amplifier 16 to a radio receiver built in the portable telephone set, and they are mounted ... O Yasuhiro 被引量: 0发表: 1998年 Electronic money ...
The telephone signalers listed below are important additions to any home where someone is hard of hearing or has low vision. They also make great gifts to show how much you care. A stand alone telephone amplifier is a great way to better hear your existing telephone, before spending extra ...
The amplifier unit basically consists of the IC CA 3020 which forms the heart of the circuit. It just requires a few other passive components for the IC to become fully operational as en efficient audio amplifier. The sensed input from the coil is not more than 300 mV, but becomes quite ...
An adjustable telephone headset for the hearing impaired comprising a left and a right ear piece, a speaker within each ear piece, an input device, such as... AF Groppe - Acoustical Society of America 被引量: 132发表: 1992年 Telephone headset amplifier with battery saver, receive line noise...
Phone according to the present invention includes loudspeaker (22) and an amplifier and a vibratory driver. Switch is formed within a shell of phone, in order to which vibration mode selection is to pass through conversion. Operation selection button (24) is formed within a shell of phone and...
Impaired Hearing Single line w/ receiver amplification and volume control. 151A amplifier, 419A varistor, and P13A693 potentiometer. See Photo. 3,7 C38.595.1 Issue 1: 10/58 C38.595.05 C38.629 502-501-116 502-520-100 502-520-402 533 A 533 B Impaired Hearing Party line w/ ...
5086464Telephone headset for the hearing impaired1992-02-04Groppe379/430 5058155Multipurpose headset amplifier1991-10-15Larsen379/442 4930156Telephone receiver transmitter device1990-05-29Norris379/388 4723293Hearing aid apparatus1988-02-02Harless381/68 ...
ringing is important in providing a clearly audible ringing signal for those with impaired hearing, who commonly have some difficulty in hearing a high-frequency tone. One suitable example of a dual-frequency oscillator is to use a 556 timer chip, which is a dual version of the 555 timer ...