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DEICON’s patented, active acoustic
damper/absorber is highly effective in abating undesirable
low-frequency tonal noise. Applications of this acoustic treatment include, but not limited
to, dampening a resonating
standing wave
(acoustic mode) in a small room (such as a recording studio or a cabin in a yacht) or
mitigating
acoustic instability in an industrial combustor (boiler, heater, gas turbine, etc.).
The controller which is realized by either a tunable, op-amp circuit or a high-speed computer (digital signal processor) can be tuned to:
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Considering the ineffectiveness of sound absorbing material at low
frequencies, treatment of sound at these frequencies has traditionally
been done using reactive damping/absorption devices such
as Helmholtz resonators, perforated acoustic liners, or quarter-wave tubes. Issues with
these low-frequency absorbers are a) their large size, b) once tuned
they can not be retuned, and c) when absorption at multiple frequencies
is required a number of these absorbers tuned to different frequencies
should be used.
DEICON'S active tuned acoustic damping/absorption solution is a smaller
and more effective alternative to the passive solutions, for low-frequency
sound absorption applications.
Please contact DEICON to explore the suitability of our active acoustic damper/absorber to your low-frequency noise issue. |
| The size of the active tuned acoustic damper/absorber is the size of a loudspeaker which is by far smaller and lighter than comparable passive low-frequency dampers/absorbers targeting the same low frequencies. |
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The application of this technology in adding modal damping to small rooms (listening rooms,
recording studios, home theaters)
is licensed to Modular Sound (the reputable manufacturer of
Bag End professional grade speakers) which makes electronic bass traps,
with the trade name E-trap(TM),
based on this technology.
Industrial applications of this technology, due to their uniqueness and need for customization, are being implemented by DEICON. |
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E-trap(TM), An Electronic Bass Trap |
Tuned Absorbers/Dampers
Active Damping of Low-frequency Boom and Rumble Noise (PDF) Flame (Combustion) Instability Mitigation (PDF) Home | Contact DEICON |