Technical Booklet R Access to and Use of Buildings·Page 50·5.47, 5.48

Hearing enhancement systems - general

Hearing enhancement systems should be provided in auditoria, performance spaces, meeting/lecture rooms over 60m², and service/reception areas with barriers or excessive noise. Three common systems are induction loop, infrared, and radio, with sound field systems also increasingly used.

In order to obtain the full benefit of attending public performances or taking part in meetings/lectures, a person using an electronic hearing device needs to receive a signal that is amplified in both volume and signal to noise ratio. The three systems commonly used to provide this enhanced level of sound are induction loop, infrared and radio. Sound field systems are also increasingly being used, particularly in educational establishments. It should be recognised that where adjacent spaces each have an induction loop system there is potential for the signals to overlap. A suitable hearing enhancement system should be provided in – (a) auditoria and rooms or spaces for performance or spectating; (b) meeting rooms and lecture rooms which are more than 60 m² in area; and (c) any service or reception area – (i) where the visitor or customer is separated from the vendor by a glazed screen; or (ii) that is subject to the risk of excessive extraneous noise.

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