Method to determine loudspeaker change of placement

    公开(公告)号:US10567901B2

    公开(公告)日:2020-02-18

    申请号:US15514455

    申请日:2015-09-29

    Applicant: Apple Inc.

    Abstract: A system and method is described for determining whether a loudspeaker device has relocated, tilted, rotated, or changed environment such that one or more parameters for driving the loudspeaker may be modified and/or a complete reconfiguration of the loudspeaker system may be performed. In one embodiment, the system may include a set of sensors. The sensors provide readings that are analyzed to determine 1) whether the loudspeaker has moved since a previous analysis and/or 2) a distance of movement and/or a degree change in orientation of the loudspeaker since the previous analysis. Upon determining the level of movement is below a threshold value, the system adjusts previous parameters used to drive one or more of the loudspeakers. By adjusting previous parameters instead of performing a complete recalibration, the system provides a more efficient technique for ensuring that the loudspeakers continue to produce accurate sound for the listener.

    MECHANISM FOR RETRIEVAL OF PREVIOUSLY CAPTURED AUDIO

    公开(公告)号:US20190384563A1

    公开(公告)日:2019-12-19

    申请号:US16553692

    申请日:2019-08-28

    Applicant: Apple Inc.

    Abstract: In one aspect a device-side audio handling input/output unit (DIO) of a hardware device writes audio data generated by the hardware device within a ring buffer. An input provided by a user for activation of a software program is received, and a notification that the software program is ready to accept the audio data is generated. A system-side audio handling input/output unit (SIO) additionally provides past audio data from the ring buffer to the software program. Other aspects also are described.

    Cooling for audio appliances
    35.
    发明授权

    公开(公告)号:US10419855B2

    公开(公告)日:2019-09-17

    申请号:US15827642

    申请日:2017-11-30

    Applicant: Apple Inc.

    Abstract: An audio appliance includes an oscillatable diaphragm, a first heat-dissipation unit, a second heat-dissipation unit, and a control unit. The first heat-dissipation unit dissipates heat at a first rate and the second heat-dissipation unit dissipates heat at a second rate. The control unit can receive an indication of a temperature of the first heat-dissipation unit and an indication of a temperature of the second heat-dissipation unit. The control unit provides oscillation control of the oscillatable diaphragm to maintain the temperature of the first heat-dissipation unit below a first threshold and/or to maintain the temperature of the second heat-dissipation unit below a second threshold. The control unit can provide the oscillation control responsive to each of the indication of the temperature of the first heat-dissipation unit and the indication of the temperature of the second heat-dissipation unit exceeding a respective threshold.

    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.

    METHOD AND SYSTEM OF AUDIO POWER REDUCTION AND THERMAL MITIGATION USING PSYCHOACOUSTIC TECHNIQUES
    39.
    发明申请
    METHOD AND SYSTEM OF AUDIO POWER REDUCTION AND THERMAL MITIGATION USING PSYCHOACOUSTIC TECHNIQUES 有权
    使用PSOCHOACOUSTIC TECHNIQUES的音频功率降低和热度减轻的方法和系统

    公开(公告)号:US20170011748A1

    公开(公告)日:2017-01-12

    申请号:US14792373

    申请日:2015-07-06

    Applicant: Apple Inc.

    Abstract: Method of audio power reduction and thermal mitigation using psychoacoustic techniques starts by receiving a decoded audio signal in a reproduction system. Decoded audio signal is a signal that is decompressed and to be played back by a speaker. A masking curve is generated based on psychoacoustic models and the decoded audio signal. The masking curve is applied to the decoded audio signal to remove unheard frequencies and to generate a power-reduced audio signal. Other embodiments are also described.

    Abstract translation: 使用心理声学技术的音频功率降低和热减轻的方法通过在再现系统中接收解码的音频信号而开始。 解码的音频信号是被解压缩并由扬声器播放的信号。 基于心理声学模型和解码音频信号产生掩蔽曲线。 屏蔽曲线被应用于解码的音频信号以去除未闻频率并产生功率降低的音频信号。 还描述了其它实施例。

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