Extended bandwidth folded well diffusor
DCFirst Claim
1. An acoustical device located in a space, comprising:
- a) at least one diffusor having a front face and at least one side face;
b) said front face having a plurality of wells;
c) said at least one diffusor including at least one forward facing T-shaped sound diffusing recess, said recess being defined by a first leg opening at said front face and leading rearward to a second leg defining a chamber, said first leg having opposed sides and a direction of elongation and extending into said at least one diffusor from said front face in said direction of elongation, and said second leg extending laterally of each side of said first leg; and
d) said wells and recess receiving sound waves from said space and diffusing said sound waves back into said space exterior of said device.
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Abstract
An extended bandwidth folded well diffusor extends the diffusion bandwidth of a shallow, asymmetric diffusor by incorporating maximum-depth, folded L-shaped, half-width wells on both ends (sides) of a diffusor, thus providing increased maximum well depth without increasing the physical depth of the diffusor. When the inventive diffusor is placed in an array, the folded L-shaped, maximum-depth, half-width end wells form a novel T-shape, which offers a favorable impedance lowering the resonant frequency, thus extending the diffusor diffusion bandwidth. T-shaped recesses may also be located within a single diffusor. The front surface of the diffusor may be flat or curved or angled.
29 Citations
20 Claims
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1. An acoustical device located in a space, comprising:
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a) at least one diffusor having a front face and at least one side face; b) said front face having a plurality of wells; c) said at least one diffusor including at least one forward facing T-shaped sound diffusing recess, said recess being defined by a first leg opening at said front face and leading rearward to a second leg defining a chamber, said first leg having opposed sides and a direction of elongation and extending into said at least one diffusor from said front face in said direction of elongation, and said second leg extending laterally of each side of said first leg; and d) said wells and recess receiving sound waves from said space and diffusing said sound waves back into said space exterior of said device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An acoustical device located in a space, comprising:
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a) a plurality of diffusors, each having a front face and at least one side face; b) said front face of each diffusor having a plurality of wells; c) said diffusors including at least one forward facing T-shaped sound diffusing recess, said recess being defined by a forwardly open first leg leading rearward to a second leg defining a chamber, said first leg having opposed sides and a direction of elongation and extending into said at least one diffusor from said front face in said direction of elongation, and said second leg extending laterally of each side of said first leg; and d) said wells and recess receiving sound waves from said space and diffusing said sound waves back into said space exterior of said device. - View Dependent Claims (18, 19, 20)
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Specification