Reflective acoustical damping device for rooms
First Claim
1. A sound dampening device for use within a room area, said device comprising,a continuous sound absorbent member of elongate tubular shape,a closure means in place on the opposite ends of said absorbent member to define therewith a chamber,porous sheet material in place about said sound absorbent member, anda reflector overlying said porous sheet, said reflector having a reflective zone extending only partially about said absorbent member to reflect wave frequences approximately 300 Hz and above with the absorbent member serving to dampen lower frequencies.
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Abstract
An acoustical device for damping and absorption of certain frequencies in a room and including a surface which functions as a low pass filter to maintain low frequency absorptive properties without reducing the acoustical brightness of the room. The device may be embodied as a piece of free standing room furniture. A capped tube of the device defines an internal ambient air chamber. Exteriorly of the tube is a perforate sound reflective member. The perforation size and spacing function as a mechanical low pass cross-over system. A cross-over option is presented to include an imperforate limp mass sheet covering at least partially the absorbent tube surface.
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Citations
10 Claims
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1. A sound dampening device for use within a room area, said device comprising,
a continuous sound absorbent member of elongate tubular shape, a closure means in place on the opposite ends of said absorbent member to define therewith a chamber, porous sheet material in place about said sound absorbent member, and a reflector overlying said porous sheet, said reflector having a reflective zone extending only partially about said absorbent member to reflect wave frequences approximately 300 Hz and above with the absorbent member serving to dampen lower frequencies.
Specification