Induction loop for hearing impaired

People with hearing loss in life have to constantly deal with various sounds in public places. Noise in spacious rooms does not allow you to parse incoming sounds. The induction loop solves this problem. It allows you to qualitatively, without distortion of external acoustic conditions, hear the voice of the interlocutor.

Induction loop for the hearing impaired - what is it?

There are additional devices for people with hearing impairments who have gained trust in many countries.

An induction loop is a device that transmits sound signals (for example, music, television broadcasts, radio broadcasts) without noise interference to the hearing aid of hearing-impaired people.

induction loop

The built-in induction coil in the hearing aid receives a signal from the induction loop system. To do this, switch to the "coil" (T) mode.

The main components of the induction system

  • Induction loop for the hearing impaired. What it is is considered above.
  • The induction loop amplifier is an auxiliary device designed to create the same field.
  • Field indicator designed for installers of induction fields.
  • Microphone.
  • Brackets for installing the device.

Induction systems are installed in concert halls, airports, cinemas, schools, theaters, churches, lectures, train stations and other facilities. Those who wear a behind-the-ear hearing aid are given the opportunity to communicate with people in public places and receive the necessary information.

behind-the-ear hearing aid

Types of induction loop systems

Induction systems are of two types: stationary professional and for home use, narrowly targeted, systems for education, special use and portable.

Induction systemArea of ​​action, mΒ²
Professional (stationary)100-3000
Home use (landline)30-70
Portableup to 100

Professional induction systems

They are designed for spacious rooms (churches, meeting rooms, cinemas, airports) and are characterized by increased power and frequency characteristics.

induction loop for the hearing impaired what is it

Primary requirements:

  • high definition sounds for people wearing hearing aids;
  • optimal sound quality in the middle of the induction loop field;
  • minimal interference from metal structures in buildings;
  • setting indicators of the boundaries of the zone of constant signal reception.

The system has the function of automatically adjusting the gain power, as a result of which a stable constant level of field strength is created with a high perception of speech with external noise.

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 indicating to people with hearing devices that they must switch the unit to β€œT” (Coil) mode.

sign induction coil

Professional induction systems are safe, stable and have a large margin of safety.

Indirect loop systems for narrow use

The range of induction systems is about 1.2 m. In such systems, an insole with an induction loop and a microphone are used. They are wireless, and installing them in a small room is not difficult. The systems are designed for use in banks, ticket offices, hotels, and supermarket cash desks. They help hard of hearing people to establish a dialogue with staff.

Portable induction system

For meetings, conferences and negotiations, a portable system with an induction loop is used. To do this, a cable runs along the entire perimeter. An innovative device contains an induction loop, cable, amplifier and wireless receiver.

Portable induction system

The advantages of portable induction systems

The convenience of using appliances is undeniable. These include:

  • the presence of a built-in microphone;
  • wireless system;
  • compactness;
  • built-in equipment interface module for connecting audio devices directly to the amplifier connector;
  • battery powered;
  • interesting design;
  • mobility (the ability to transfer to other rooms).

The range of induction loops, depending on the purpose, is huge: from professional use in spacious rooms to compact portable devices. Using systems with an induction loop allows people with weak hearing to navigate in a sound environment with a constant increased noise level.


All Articles