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press the button again to listen to TV wirelessly.
(3) Regular and extensional hearing aid:
The receiver can be used as a regular hearing aid. It's very convenient to use in
noisy environment, such as group party, dinner together and in the car, etc.
(
4) Hearing aid function for phone call:
The external microphone works with the receiver. That amplifies the voice from
phone call. Or match a mobilephone with the receiver by the bluetooth.
(5) Computer chatting headphone with hearing aid function:
(refer to article 6 of P14 )
With this function, t
he hearing impaired people can hear and talk on the internet
very clearly.
(
6) Wired headphone with hearing aid function:
Connect a MP3/iPhone/PC, etc. to the headphone's line-in jack with the wired
headphone cable, the hearing impaired people can listen to the music enjoyably.
4. Main technologies
(1) Voice clarifying technology(VCT):
Reduce background sound of TV, increase the sound of dialogues, so that hard to
hear words can easily stand out, making television dialogues easier to understand.
(2) Noise cancelling technology(NCT):
Reduce the environmental noise to help the users to focus on listening to the
dialogues of TV.
(3) Automatic signal control(ASC):
Hearing disable people's adaptive faculty for volume change is weak (can't hear
loud sound, and can't hear low volume sound), our circuit will adjust the sudden
change volume and make the output volume stable. It will avoid strong signal
hurting the users' listening.
(4) Balance control:
Specially designed for hearing loss people whose right and left hearing levels
are different. Users can adjust the right & left volume to best fit themselves by
the VOLume and BALance.
(refer to article 2 of P12 )
(refer to article 4 & 5 of P13 )
(refer to article 3 of P12 )
03
01
F. Technology parameters
1
Transmitter
、
Transmitting frequency
Modulation method
Trans
mitting
power
Working voltage
Input protecting vol.
Li-ion battery charging current
Working current
Time of getting into the standby
status
Automatic power off voltage
Signal input range
Signal input limiting volt
Max. gain of MIC signal input
Transmission distance
2.4GHz ISM
GFSK
Bluetooth V2.1+EDR
Class II A2DP
3.5dBm
±
5.0
0.3
V, 1000mA
≥
±
6.0 0.2V
±
140 10mA
25~45mA
6 minutes (after no signal put in)
≤15mV
0.1~1.0V
350mV
It will be limited to 350mV to
prevent too high voice when the
signal input volt is over 350mV.
±
40 2dB
(at 1KHz)
≥
15M (without obstacles)
16
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