for applied acoustics was founded in
1985 in Dortmund/Germany by Emil
Purpose of the institute, within research
and development, was the examination of complex sound absorbing and receiving
resonance systems, in particular musical instruments.
This intuition awoke in Weiss during years of being a musician, because
he wouldn’t give in on the fact, that building a musical instrument
not only finalizes its good but also its bad conditions for good. The
focus points of this action were taken together and continuously worked
out in the first project called “the resonance project”
– the experience was taken to further plans.
While the "resonance project"
primarily worked at the optimization of reflecting resonance systems,
the second project, “the sonor
project” examined and manipulated room-acoustics. In this project
priorities were put to permanently take influence on the room acoustic
without the help of electronic aid.
The so achieved knowledge and positive
results obviously had to be taken on to common lawfulness. The results
again were taken forward to a next project called “the low
noise rail project”, a subject that normally wouldn’t
be associated with sound as such.
During the examination of the sound
radiating rail systems and the resulting noise development, it could
be proofed, that a prophylactic manipulation of the involved materials
(moving substance - non-moving substance) resulted in distinct reduction
of the sound radiance. Due to different priorities and the monopolistic
owner structure of all rail nets in Germany however, this could not
be applied so far.
quasimodo project”, the improvement of sound behaviour had
priority as well, but this time not the reduction of sound radiation
but the very opposite.
A leading European bell foundry could be convinced by allowing a sound
optimization experiment under the aspects of dissonance at one of their
bells, a so called “bad cast”. All negative
characteristics of the so far unsellable bell were eliminated.
The transition into the observation of
biological systems is only a logical consequence. In “the
antinnitus project” a pilot study proofed the human ear to be
a system, which obeys same or at least similar laws like any other resonance
The as epidemic known “tinnitus”
could be examined and then manipulated on a group of free volunteers that
were found to be un-therapy able by school medicine, so that it could
be eliminated in this order, what no other medical method had achieved
The process is based on an individually
adjusted series of sounding consonances, an individual composition of
suitable sounds so to say, on which an existing tinnitus can react.
In “the auris project”
lasting corrections of the actual hear ability are achieved in cases of
In 1995 the ifa moves from Dortmund to
Heussenstamm near Frankfurt at Main, to team up with a doctoral thesis
at the Frankfurt University, based on common studies of “the
does not permanently employ people, but with the help of modern communication
systems, it is in contact with a network of specialists at all time, which
on one side is very economical, and on the other side very effective.
It takes advantage in all intentions.