Unprecedented STI values in reverberant rooms

Emad El-Saghir

Head of Applications

Wednesday 16th January 2019

04:00pm

11 minutes

Unprecedented STI values in reverberant rooms
Unprecedented STI values in reverberant rooms

Emad El-Saghir, Head of Applications

11 minutes

Wednesday 16th January 2019 | 04:00pm

Are you working on projects with challenging acoustics and long reverberation time?

The direct-to-reverberant ratio is one of the cornerstones in the creation of sound experiences with high speech intelligibility. This becomes a particular challenge if the environment is highly reverberant, the diffuse field is large or several sound fields of different contents are to be isolated from each other.

Conventional loudspeaker systems are limited by physics in their ability to manipulate the direct-to-reverberant ratio. The spherical or cylindrical radiation of sound into the environment causes unavoidable reflections. In order to amplify the direct sound energy in relation to reflected energy, one tries to place conventional loudspeakers with precise radiation correctly in the room, which can only improve the sound experience to a limited extent. Absorption materials are also often needed to attenuate the scatter field and minimize reflections, which is costly and often goes against aesthetics.

Wave field synthesis provides an unprecedented level of control over the propagation of sound waves by generating special types of sound waves. One of the wave fronts is the planar wave. It is very energy efficient and helps any acoustician to maximize direct-to-reverberant ratio in the desired environment.

This online seminar is designed to help acoustic planners and others improve the sound experience in a reverberant environment.