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JPen Medical
8th November 2023

Induction Loop Amplifier Maintenance Calibration

In the UK, more than 10 million people – or one in six of us – have some form of hearing loss.  

Not only is it vital that workplaces and public places are inclusive for those with hearing loss or impairment, the UK’s Equality Act (2010) also mandates reasonable adjustment in order not to disadvantage those with hearing loss which is a disability and therefore a protected characteristic.  

Whilst most people with a hearing impairment will likely use a hearing aid, these are often most useful in one-to-one conversation situations. Issues arise when hearing impaired people are surrounded by noises – such as an open-plan office, meeting room, restaurant or factory. When there is more distance between the listener and speaker, it can be harder to distinguish different sounds.  For this reason, induction loop amplifiers, or hearing loops, are now routinely installed in UK work and public placesBut what exactly is it? And why should businesses consider its implementation? This guide delves deep into this important piece of auditory technology. 

What is an Induction Loop Amplifier? 

An Induction Loop Amplifier, commonly referred to as an induction or hearing loop, is a specialized sound system designed specifically to aid those with hearing aids or cochlear implants. Unlike typical speakers that send sound through the air, this system transmits audio signals directly into hearing aids and implants, thereby reducing background noise and delivering clearer sound. 

The system operates in a rather straightforward manner: 

  1. A microphone picks up sound, be it from a person speaking or an audio device. 

  1. The captured sound is then amplified through the Induction Loop Amplifier. 

  1. This amplifier subsequently sends the audio signal through a wire loop, usually embedded around the perimeter of a room or specific area. 

  1. As current flows through the loop, it generates an electromagnetic field. 

  1. Hearing aids or cochlear implants with a telecoil (T-coil) component can pick up this electromagnetic field and convert it back into sound, delivering a pristine and direct audio experience to the wearer. 

What is it used for? 

Primarily, the Induction Loop Amplifier serves those with hearing impairments, offering them an enhanced auditory experience in settings where ambient noise might be challenging. Whether in a busy airport, a bustling hospital a buzzing conference centre, or even at home watching TV, this system ensures the listener receives clear audio without the distracting background noises. 

Where should they be installed? 

The versatility of induction loops is evident in the diverse range of locations they can be beneficial: 

  • Large Venues: Concert halls, theatres, churches, factories, busy organisations with lots of foot traffic and conference centres can greatly benefit from these systems, ensuring that all attendees, regardless of their hearing abilities, receive clear audio. 

  • Smaller Settings: Settings like ticket counters, reception desks, or small meeting rooms can utilize portable or fixed loops to enhance direct one-on-one communications. 

To help support the clear transmission of sound including emergency announcements, induction loop amplifiers should be annually maintained and calibrated. Compliance maintenance is not intrusive, overly complex or cost-prohibitive, and supports your organisation’s continued compliance with Equality Act and Disability Discrimination Act requirements.  

Why is it important for businesses to have Induction Loop Amplifiers? 

  1. Inclusivity: Businesses that prioritise inclusivity signal to their clients and customers that they care about everyone's experience. By installing induction loops, businesses cater to the needs of the hearing-impaired, ensuring they're not left out. 

  1. Regulatory Compliance: The Equality Act mandates that businesses provide accessible facilities and services to people with disabilities so that they are not put at a disadvantage to non-disabled people. Incorporating induction loops can help businesses meet these requirements. 

  1. Enhanced Customer Experience: Clarity in communication is crucial in many business settings. By reducing background noise and distractions, businesses can ensure that their message is heard loud and clear. 

  1. Positive Business Image: Embracing accessibility technologies such as induction loops amplifies a positive image for businesses, showcasing their commitment to serving all clientele regardless of their physical capabilities. 

Best practice for maintaining Induction Loop Amplifiers 

Best practice for maintaining and calibrating your induction loop amplifier involves several key tasks including:  

  • Visual inspection of all device and installation connections, cabling and manufacturer/serial data  

  • Audio and signal measuring including live signal ‘listening’ tests  

  • Background noise testing to ensure a reading no greater than -27dB- if a reading higher this is recorded the hearing loop can may not function correctly  

  • Field strength and frequency response are checked to ensure the device functions correctly for those with hearing aids  

  • Where possible the drive control on the amplifier is adjusted so the reading peaks to 0dB meaning the hearing loop signal will be strong enough to be picked up by those with hearing aids  

  • Ensuring the amplifier conforms to IEC 62353  

  • Ensuring the amplifier is clearly labelled pass or fail, with immediate notification to the customer of any fails.  

JPen Medical regularly finds routine problems with installation of hearing loop technology such as close proximity to other electronic equipment which causes electrical interference and with poor siting of microphones. As part of our medical equipment safety testing package, JPen Medical provides comprehensive maintenance for induction loop amplifiers, ensuring continued safe and effective operation of this important technology.  

Why not contact us to find out how we can support your induction loop and other medical device maintenance requirements? Email info@jpenmedical.co.uk or call 0333 005 0476