Since voice systems are used in emergencies to inform employees and visitors and thus bring them to safety as quickly as possible, brilliant voice quality is an essential requirement for a voice alarm system. In a hazardous situation, the announcements must be easy to understand in order to save lives in an emergency. What sounds obvious at first often poses a major challenge in practice when it comes to acoustic planning and selecting the loudspeaker system to be used.
Large rooms, halls, different ceiling heights, winding corridors, loud background noise, different floor coverings and building materials are just some of the factors that influence room acoustics. Other factors for speech intelligibility are ambient noise, echo formation, the directional characteristics of the loudspeakers and the loudness of the speech signal.
As a certified specialist company, ComPeri is your expert in the field of media technology. We know the challenges of acoustic planning and develop customized loudspeaker system solutions for your premises. For perfect acoustic planning, we use an internationally standardized, physical measurement method (STI – Speech Transmission Index). A measuring microphone receives a test signal, which measures and analyzes the quality of speech intelligibility using the STI measuring device. The STI value ranges from 0.00 (very poor) to 1.00 (excellent). A minimum value of 0.5 or higher is prescribed for SAA voice alarm systems.