CIRCULAR LOUDSPEAKER ARRAY WITH CONTROLLABLE DIRECTIVITY
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United States of America Patent
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Issued Date -
Mar 7, 2013
app pub date -
May 10, 2011
filing date -
May 21, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The invention relates to a sound-emitting device with controllable directivity comprising a plurality of sound sources (7) distributed over the surface of a body 5, each of said sound sources (7) being driven by a separate power amplifier (12), the input terminal of which is provided with the output signal from a corresponding filter (10), such that the frequency response of each individual sound source (7) can be controlled, where each filter (10) is provided with an input signal (11) corresponding to a plurality of input channels Ch1, Ch2 . . . ChN. The body (5) could according to one embodiment of the invention comprise a cylindrical body provided with end pieces (6) at either longitudinal end. The present invention furthermore relates to a method for controlling the individual sound sources of the sound-emitting device in order to obtain a given target directivity.
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