中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

41 records (took 0.018 seconds)

    AUDIO SYSTEMS WITH SMOOTH DIRECTIVITY TRANSITIONS
    11.
    发明申请
    AUDIO SYSTEMS WITH SMOOTH DIRECTIVITY TRANSITIONS 审中-公开

    公开(公告)号：US20180352325A1

    公开(公告)日：2018-12-06

    申请号：US15619058

    申请日：2017-06-09

    Applicant: Apple Inc.

    Inventor： Afrooz Family ,  John H. Sheerin

    IPC: H04R1/40 ,  H04R3/12 ,  H04R3/04 ,  H03G5/16

    CPC classification number: H04R1/403 ,  H03G5/165 ,  H04R3/04 ,  H04R3/12 ,  H04R2201/401 ,  H04R2430/25

    Abstract: An audio system includes a loudspeaker cabinet defining a longitudinal axis. Several loudspeaker transducers are distributed around the longitudinal axis. The audio system includes an audio rendering processor to cause the loudspeaker transducers to emit a sound field approximating a desired contour. The desired contour can be decomposed into a combination of several constituent modal beam components, and the audio rendering processor can render a truncated version of the decomposition to render an approximation of the desired contour. The desired contour can be one of a plurality of contours stored in a memory, or can be user defined. The cabinet includes a processor and a memory having instructions that, when executed by the processor, cause the audio system decompose a desired contour and to render a truncated version of the decomposition. Related principles are described by way of reference to method and apparatus examples.

    LOUDSPEAKER WITH REDUCED AUDIO COLORATION CAUSED BY REFLECTIONS FROM A SURFACE
    12.
    发明申请
    LOUDSPEAKER WITH REDUCED AUDIO COLORATION CAUSED BY REFLECTIONS FROM A SURFACE 审中-公开

    公开(公告)号：US20170280231A1

    公开(公告)日：2017-09-28

    申请号：US15513955

    申请日：2015-09-29

    Applicant: Apple Inc.

    Inventor： Martin E. Johnson ,  Simon K. Porter ,  Suzanne Hardy ,  John H. Sheerin

    IPC: H04R1/28 ,  H04R1/02 ,  H04R1/40

    CPC classification number: H04R1/2811 ,  H04R1/02 ,  H04R1/025 ,  H04R1/26 ,  H04R1/2803 ,  H04R1/288 ,  H04R1/403 ,  H04R3/14 ,  H04R2201/401

    Abstract: Loudspeakers are described that may reduce comb filtering effects perceived by a listener by either 1) moving transducers closer to a sound reflective surface (e.g., a baseplate, a tabletop or a floor) through vertical (height) or rotational adjustments of the transducers or 2) guiding sound produced by the transducers to be released into the listening area proximate to the reflective surface through the use of horns and openings that are at a prescribed distance from the reflective surface. The reduction of this distance between the reflective surface and the point at which sound emitted by the transducers is released into the listening area may lead to shorter reflected path that reduces comb filtering effects caused by reflected sounds that are delayed relative to the direct sound. Accordingly, the loudspeakers shown and described may be placed on reflective surfaces without severe audio coloration caused by reflected sounds.

    PHASE PLUG HAVING NON-ROUND FACE PROFILE
    18.
    发明申请
    PHASE PLUG HAVING NON-ROUND FACE PROFILE 审中-公开

    公开(公告)号：US20180279041A1

    公开(公告)日：2018-09-27

    申请号：US15468030

    申请日：2017-03-23

    Applicant: Apple Inc.

    Inventor： John H. Sheerin ,  Ethan L. Huwe

    IPC: H04R1/34 ,  H04R1/30

    CPC classification number: H04R1/347 ,  H04R1/30 ,  H04R2201/34

    Abstract: A phase plug having an input face circumscribed by a round profile and an output face circumscribed by a non-round profile, is described. The phase plug may include several arms radiating from a central axis and separated by radial channels extending axially from the input face to the output face. Planes containing the round profile and the non-round profile may be nonparallel, and sound ports at the output face may be asymmetrically disposed about a midline of the output face. Other embodiments are also described and claimed.

Patent Agency Ranking