Hearing Machine
Hearing aids improve listening comfort and participate in multi-person conversations Due to the optional hearing aids for both ears, it improves the ear's own sound collection, noise reduction, gain, positioning, balance function and fusion effect, and the user will greatly improve the...
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Description
The structure of the hearing aid
There are many names for hearing machine, but all electronic hearing aids hearing machine work on the same principle. Any hearing machine includes 6 basic structures.
1. A microphone (microphone or microphone) receives sound and converts it into electric wave form, that is, converts sound energy into electrical energy.
2. hearing machine including Amplifier amplifies electrical signals (transistor amplifier circuit)
3. The headset (receiver) converts electrical signals into acoustic signals (that is, converts electrical energy into sound energy).
4. The ear mold (earplug) is inserted into the external ear canal.
5. Volume control switch
6. Dry battery for power supply for ear amplifier hearing machine.
More information
In addition to the above 6 components, most models of hearing aids have 3 accessories, or 3 additional circuits (tone control, induction coil, output limit control). A modern electronic hearing machine is an amplifier whose function is to increase the intensity of sound energy and transmit it into the ear as undistorted as possible. Because the sound energy of sound cannot be directly amplified, it is necessary to convert it into an electrical signal, and then convert it into sound energy after amplification. The input transducer is composed of microphone (microphone or microphone), magnetic induction coil and other parts. Its function is to convert the input sound energy into electrical energy and transmit it to the amplifier. The electronic ear hearing machine amplifies the input electrical signal and then transmits it to the output transducer. The output transducer is composed of earphones or bone conduction vibrators, and its function is to convert the amplified signal from electrical energy into sound energy or kinetic energy for output. The power supply is an indispensable part of supplying the working energy of hearing machine. In addition, it is equipped with peak clipping (PC) or automatic gain control (AGC) devices to suit the needs of patients with different degrees of deafness.
About company
FAQ
Q: What’s the minimum order quantity (MOQ)?
Q: Can provide free samples?How long can I get the samples?
A: Yes.Usually for two or three days.
Q: How much the transportation freight of samples?
A: The freight depends on the weight and package size and your area.
Q: What’s your delivery time?
A:Generally it is 3-10 days if goods are in stock, or 15-20 days if OEM branding
Q: How long is the validity of quotation?
A: Generally one month from the date of quotation unless material and currency big changes
Q: Do you have the CE certificate ?
A: Yes, most of our products have the CE certificate.
Q: How to ship the order?
A: By sea, by air or by express. We can provide best choice to you
Q: What is your terms of payment ?
A: We accept T/T ,LC,Western Union,Paypal
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