Invention Grant
- Patent Title: Loudspeaker with reduced audio coloration caused by reflections from a surface
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Application No.: US15623028Application Date: 2017-06-14
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Publication No.: US10015584B2Publication Date: 2018-07-03
- Inventor: Martin E. Johnson , Simon K. Porter , Suzanne Hardy , John H. Sheerin
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: APPLE INC.
- Current Assignee: APPLE INC.
- Current Assignee Address: US CA Cupertino
- Agency: Womble Bond Dickinson (US) LLP
- Main IPC: H04R1/28
- IPC: H04R1/28 ; H04R1/02 ; H04R1/26 ; H04R1/40 ; H04R3/14

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 a 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 describe may be placed on reflective surfaces without sever audio coloration caused by reflected sounds.
Public/Granted literature
- US20170289673A1 Loudspeaker with Reduced Audio Coloration Caused by Reflections from a Surface Public/Granted day:2017-10-05
Information query
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