Home > Term: assistive listening system (ALS)
assistive listening system (ALS)
An amplification system utilizing transmitters, receivers, and coupling devices to bypass the acoustical space between a sound source and a listener by means of induction loop, radio frequency, infrared, or direct-wired equipment.
- Part of Speech: noun
- Industry/Domain: Fire safety
- Category: Prevention & protection
- Company: NFPA
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