AUDIO ADAPTATION TO ROOM
    25.
    发明公开

    公开(公告)号:EP3410748A1

    公开(公告)日:2018-12-05

    申请号:EP18174725.4

    申请日:2018-05-29

    Applicant: Apple Inc.

    Abstract: An audio system includes one or more loudspeaker cabinets, each having loudspeakers. Sensing logic determines an acoustic environment of the loudspeaker cabinets. The sensing logic may include an echo canceller. A low frequency filter corrects an audio program based on the acoustic environment of the loudspeaker cabinets. The system outputs an omnidirectional sound pattern, which may be low frequency sound, to determine the acoustic environment. The system may produce a directional pattern superimposed on an omnidirectional pattern, if the acoustic environment is in free space. The system may aim ambient content toward a wall and direct content away from the wall, if the acoustic environment is not in free space. The sensing logic automatically determines the acoustic environment upon initial power up and when position changes of loudspeaker cabinets are detected. Accelerometers may detect position changes of the loudspeaker cabinets.

    ADJUSTING THE BEAM PATTERN OF A SPEAKER ARRAY BASED ON THE LOCATION OF ONE OR MORE LISTENERS
    27.
    发明公开
    ADJUSTING THE BEAM PATTERN OF A SPEAKER ARRAY BASED ON THE LOCATION OF ONE OR MORE LISTENERS 有权
    扬声器布置束分布对的一个或更多的观众的部位的基础上控制

    公开(公告)号:EP2965312A2

    公开(公告)日:2016-01-13

    申请号:EP14710772.6

    申请日:2014-03-04

    Applicant: Apple Inc.

    Abstract: A directivity adjustment device that maintains a constant direct-to-reverberant ratio based on the detected location of a listener in relation to the speaker array is described. The directivity adjustment device may include a distance estimator, a directivity compensator, and an array processor. The distance estimator detects the distance between the speaker array and the listener. Based on this detected distance, the directivity compensator calculates a directivity index form a beam produced by the speaker array that maintains a predefined direct-to-reverberant sound energy ratio. The array processor receives the calculated directivity index and processes each channel of a piece of sound program content to produce a set of audio signals that drive one or more of the transducers in the speaker array to generate a beam pattern with the calculated directivity index.

    Abstract translation: 指向性调整装置做维护基于相对于扬声器阵列的监听器的检测到的位置的恒定直接到混响比率进行说明。 指向性调节装置可包括距离估计器,方向性补偿器,和阵列处理器。 距离估计器检测的扬声器阵列和收听者之间的距离。 在此基础上检测到的距离,指向性补偿器计算一个方向性指数形成由扬声器阵列产生的光束没有维持预定义的直接到混响声能量比。 阵列处理器接收计算的指向性指数和处理片的声音方案内容的每个信道以产生一组音频信号的并驱动一个或多个换能器的扬声器阵列中,以生成与所计算的方向性指数的波束图案。

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