Hearing-impaired people have to deal with various sounds in public places all the time. Noise in spacious rooms does not make it possible to make out incoming sounds. This problem is solved by an induction loop. It allows you to hear the voice of the interlocutor with high quality, without distortion of external acoustic conditions.
Induction loop for the hearing impaired - what is it?
There are additional devices for the hearing impaired that have gained confidence in many countries.
An induction loop is a device that transmits sound signals (such as music, TV broadcasts, radio announcements) without noise interference to the hearing aid of hearing impaired people.
The built-in telecoil in the hearing aid receives the signal from the teleloop system. To do this, switch to the "coil" (T) mode.
The main components of the induction system
- Induction loop for the hearing impaired. What is it - discussed above.
- The Loop Amplifier is an auxiliary device designed to create a field of the same name.
- Field indicator designed for induction field installers.
- Microphone.
- Brackets for installing the device.
Induction systems are installed in concert halls, airports, cinemas, schools, theaters, churches, lecture halls, railway stations and other facilities. Behind-the-ear wearers are given the opportunity to communicate with people in public places and get the information they need.
Types of induction loop systems
There are two types of induction systems: stationary professional and home use, highly specialized, systems for education, special use and portable.
| Induction system | Area of action, m² |
| Professional (stationary) | 100-3000 |
| Home use (landline) | 30-70 |
| Portable | up to 100 |
Professional induction systems
Designed for spacious environments (churches, meeting rooms, cinemas, airports) with increased power and frequency response.
Basic requirements:
- high definition sounds for hearing aid wearers;
- optimum sound quality in the middle of the induction loop field;
- minimal interference from steel structures in buildings;
- setting zone border indicatorscontinuous signal reception.
The system has an automatic gain power control function, resulting in a stable constant field strength level with high speech perception in the presence of external interference.
They are designed in accordance with the international standard IEK 60118-4. The main difference from other systems is the transmission of an audio signal in both horizontal and vertical directions.
There is a sign telling people with hearing aids to put the hearing aid into "T" (Coil) mode.
Professional induction systems are safe, stable and have a large margin of safety.
Systems for specific use with induction loop
The range of induction systems is about 1.2 m. Such systems use an insole with an induction loop and a microphone. They are wireless, and installing them in a small room is not difficult. The systems are designed for use in banks, ticket offices, hotels, supermarket checkouts. They help hard of hearing people to establish a dialogue with the staff.
Portable induction system
For meetings, conferences and negotiations, a portable system with an induction loop is used. To do this, a cable is stretched around the entire perimeter. The innovative device contains an induction loop, a cable, an amplifier and a wireless receiver.
Advantages of portable induction systems
The convenience of using appliances is undeniable. These include:
- presence of a built-in microphone;
- wireless system;
- compact;
- built-in equipment interface module for connecting audio devices directly to the amplifier jack;
- battery powered;
- interesting design;
- mobility (the ability to move to other rooms).
The range of induction loops, depending on the purpose, is huge: from professional use in spacious rooms to compact portable devices. The use of inductive loop systems enables people with hearing impairments to navigate in sound environments with a constant high level of noise.
