See What You Hear!
Time acoustic holography
Temporal acoustic holography is a method of acoustic imaging calculation, it is able to identify the transient sources in the very low frequencies, that is to say, just with only one measure, you can have a complete acoustic image. The time acoustic holography used with our special antenna SpyFrame resizable, make this technical of calculation very easily to analyze for many different size's objects. The useful frequency band begins from 20Hz, and in the favourable condition of application can reach the ability of analysis until 9000Hz.
see the publication of engine analysis with 2D time acoustic holography.
Acoustic Picture Maker presents results stemmed from calculations in the temporal field what ensures a reliable analysis of the transient sources. The complement with temporal acoustic holography allows to analyse engines during combustion, or the startups of fluid circuit for example. No more source escapes the analysis by Acoustic Picure Maker between 100 and 6000Hz for various sizes of objects, examples :
- 32 microphones, 1 SpyFrame, small objects of 50x50cm 200-7000Hz
- 64 microphones, 1 SpyFrame, medium objects of 70x70cm 100-5000Hz
- 96 microphones, 4 SpyFrames, large objects of 140x140cm 50-4000Hz
Result of a measurement on mono-cylinder engine with 225 Hz. At the top : time acoustic holography, at the bottom : acoustic beamforming