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MC Squared Systems Design Group

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Speech Intelligibility


Classroom Speech Reinforcement

Disability Access for
Hearing Impaired Persons

We have been deeply involved in the promotion of improved acoustical and sound system standards for schools and universities as part of a program to help provide a comfortable and helpful acoustical environment for people with hearing impairment. Lower background noise and shorter reverberation times are important components of providing usable speech intelligibility for people with moderate hearing impairment. We design and specify listening assistance systems for compliance with the Canadian and American building code requirements for access by people with hearing impairment. We also evaluate and identify sources of EMI (Electro-Magnetic Interference) that can hamper the use of hearing aid T-Coil settings with telephones and listening assistance neck loops.

We have presented special workshops and seminars to a variety of groups, including audiologists, end-users and product manufactuers outlining the issues related to speech intelligibility, room acoustics and sound system installation and design.

We presented at the February 98 IHEAR Conference in Vancouver, describing the issues behind sound system design for critical speech intelligibility work, and showing how poor sound system design can replicate the frequency response of ears with hearing loss in the critical intelligibility bands.

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Mc Squared System Design Group, Inc Mc Squared System Design Group, Inc
323 - 901 West 3rd Street, North Vancouver, BC. V7P 3P9   Ph 604-986-8181
116-5100 Anderson Way, Vernon, BC V1T 0C4   Ph 604-986-8181
403 - 1240 Kensington Rd NW, Calgary, AB. T2N 3P7   Ph 403-452-2263
901 King Street West, Suite 400, Toronto, ON. M5V 3H5  Ph 647-479-8601