Section 2: Business premises.

The premises reserved for the professional activity of a hearing aid acoustician comprise : 1° Either a practice and a soundproof booth, or an audioprosthetic measurement room with a minimum useful volume of fifteen cubic metres. In both cases, the noise level under normal conditions of use must not exceed forty decibels A expressed as a constant equivalent level over a measurement period of one hour; this reverberation time must…

In the premises defined in article D. 4361-19, the hearing-aid acoustician has the following equipment: 1° Audioprosthetic measurement equipment : a) A standardised class A tonal and vocal audiometer or an equivalent audiometric unit with outputs for headphones, vibrator and loudspeaker. A sound localisation system consists of at least three loudspeakers at least one metre apart from the test subject; b) A device for balancing stereophonic prostheses; c) A magnetic…