User benefits

• Limited number of measurement positions
• No lower frequency limitations
• Favourable cost structure
• Short set up times
• Limited number of measurement positions

The concept of acoustic eyes is based upon the triangulation of sound sources in a certain frequency bandwidth, using the information provided by at least two three dimensional sound intensity probes. It allows sound source localization and ranking in free field conditions. The concept acoustic eyes can be an an alternative for the far field beam forming technique.

• See paper on acoustic eyes & helicopters on the papers / Source Localization page
   
• See video 'Acoustic eyes' on the video page

Limited number of measurement positions

Beam forming techniques require a large number of measurement points, normally above 100 channels. Acoustic eyes based sound source triangulation can be done with a few probes with 4 channels each.

No lower frequency limitations
With beam forming arrays, the distance between the measurements points is inversely proportional to the frequency. Thus, beam forming is not practical for lower frequencies. Acoustic eyes sound source triangulation has no lower frequency limitations.
Favourable cost structure

Favourable cost structure

Beam forming techniques use large number of low cost sound pressure transducers, but require a large number of expensive high end data acquisition channels. Acoustic eyes is based on a few high value and multi purpose three dimensional sound intensity probes, and has thus a far more favourable cost structure.
 

Short set up times

Measurement set up time is extremely short.