Once we made the decision to exhibit at the high end show in Munich, we booked the exhibition space and made the arrangements to visit.
We travelled to the MOC with a laptop, measuring mics, power amps and his custom designed and manufactured omni directional full range test loudspeakers.
The purpose of the visit was to check out the acoustics of the demo room.
You will see from the curves below some of the data collected and processed.
Without the measured data it would have been an easy assumption to add absorption to the room both at low frequencies – most rooms require some LF absorption especially in the corners – and higher up the band to remove the over liveliness and flutter echo which were completely obvious on entering the room.
Looking at the data, however, indicates that the long reverberation times were centred around 2kHz. Adding generalised absorption would have killed the room above around 4kHz as it would have reduced all the HF in the room.
Markus, therefore, computed some very specific and narrow base absorbers for the 2kHz area and they were combined with a large amount of diffusion.
Diffusion keeps the overall energy the same but ensures it’s not reflected back to the listening position thus confusing the sound and making it harder to hear the true output of the speakers.
We created a room which was very pleasant in which to enjoy music and to talk. You can see the difference in the before and after on the graph.