PASSIVE MICROPHONE ARRAY LOCALIZER
    1.
    发明申请

    公开(公告)号:US20180249267A1

    公开(公告)日:2018-08-30

    申请号:US15754914

    申请日:2015-08-31

    Applicant: Apple Inc.

    CPC classification number: H04R29/005 G01S3/802 G01S5/186 G01S5/26 H04R1/406

    Abstract: A relative location and orientation of microphone arrays relative to each other is estimated without actively producing test sounds. In one instance, the relative location and orientation of a second microphone array relative to a first microphone array is estimated based on the direction-of-arrival (DOA) of an ambient sound at the first microphone array, the DOA of the ambient sound at the second microphone array, and the time-difference-of-arrival (TDOA) of the ambient sound between the first microphone array and the second microphone array. Other embodiments are also described and claimed.

    Efficient system and method for generating an audio beacon

    公开(公告)号:US09749747B1

    公开(公告)日:2017-08-29

    申请号:US14933990

    申请日:2015-11-05

    Applicant: Apple Inc.

    Abstract: An audio emission device and an audio capture device that may respectively emit and capture sound within a listening area is described. The audio emission device may produce one or more primary audio beams in the listening area. Each of the primary audio beams may be formed by weighting a set of modal beam patterns. Separate orthogonal test signals may be injected into each modal beam pattern. Based on these separate orthogonal test signals, the individual modal beam patterns may be extracted from a detected sound signal, produced by the audio capture device, such that the contribution from each of these modal patterns in the detected sound signal may be determined. Utilizing the contributions from each modal beam pattern in the detected sound signal, the spatial relationship (e.g., distance and/or orientation/angle) between the audio emission device and the audio capture device may be determined.

Patent Agency Ranking