摘要 |
<p>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.</p> |
申请人 |
BANG & OLUFSEN A/S;MUNCH, GERT, KUDAHL;DYREBY, JAKOB;OLSEN, MARTIN;MOELLER, MARTIN, BO |
发明人 |
MUNCH, GERT, KUDAHL;DYREBY, JAKOB;OLSEN, MARTIN;MOELLER, MARTIN, BO |