发明名称 |
AN AUDIO SYSTEM AND METHOD OF OPERATION THEREFOR |
摘要 |
An audio system comprises an ultrasound sensor array (105) which has a plurality of ultrasound sensor elements, and an audio band array (101) comprising a plurality of audio band elements. The same array of wideband audio transducers may be used for both the ultrasound sensor array (105) and the audio band array (101). An estimator (107) generates a presence characteristic of a user in response to ultrasound signals received from the ultrasound sensor array. The presence characteristic may specifically comprise a position estimate for the user. An audio array circuit (103) generates a directional response for the audio band array (101) by applying weights to individual audio band signals for the audio band elements. A weight circuit (109) determines the weights in response to the presence characteristic. The system may provide improved adaptation of the directivity of the audio band array (101) and specifically does not require the sound source in the audio band to be active for adaptation. |
申请公布号 |
WO2012093345(A1) |
申请公布日期 |
2012.07.12 |
申请号 |
WO2012IB50007 |
申请日期 |
2012.01.02 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V.;PANDHARIPANDE, ASHISH VIJAY;SRINIVASAN, SRIRAM |
发明人 |
PANDHARIPANDE, ASHISH VIJAY;SRINIVASAN, SRIRAM |
分类号 |
H04R1/40;G10K11/34;H04R3/00;H04R3/12;H04R29/00 |
主分类号 |
H04R1/40 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|