Projects in the field of speech acoustics concern the intelligibility and privacy of speech. It is a topic that is relevant in many types of buildings and situations, varying from auditoria to open plan offices, railway stations and even inside airplanes. New measurement techniques are being developed to be able to investigate speech intelligibility under various conditions.

If you are interested in the latest new projects or have a project in mind of your own contact Constant Hak.

Example 1: Hercules C130 airplane

The Hercules C130 is one of most noisiest military airplanes used. During the flight, speech communication is of vital importance but very limited due to the high background noise. To study this problem, the speech transmission has been investigated using a new measurement technique. As a master student project, the speech transmission was measured inside the airplane while being on the ground without the airplane noise. Afterwards, the noise during flight was estimated and the influence on speech transmission was modelled.  

Example 2: STI Measurements using balloons

In most cases a large set of equipment is needed to perform speech intelligibility measurements in practice. However, in some cases an lightweight measurement setup is desired when travelling. As an apprentice project, the possibility of using balloons for measuring speech transmission index has been investigated.

Example 3: Speaker and listeners direction

The direction of the speaker and listener when considering speech intelligibility in an office is often unknown. For an average result often loudspeakers and microphones are used that are not directional. To investigate the possible error made by this method, speech intelligibility measurements have been performed with different combinations of speaker and listeners direction in an open plan office.

No main menu on top?
Level Acoustics Homepage