US 12,192,698 B2
Loudspeaker with reduced audio coloration caused by reflections from a surface
Martin E. Johnson, Los Gatos, CA (US); Simon K. Porter, San Jose, CA (US); Suzanne Hardy, San Jose, CA (US); and John H. Sheerin, Santa Clara, CA (US)
Assigned to APPLE INC., Cupertino, CA (US)
Filed by APPLE INC., Cupertino, CA (US)
Filed on Oct. 5, 2023, as Appl. No. 18/377,261.
Application 18/377,261 is a continuation of application No. 17/651,563, filed on Feb. 17, 2022, granted, now 11,818,535.
Application 17/651,563 is a continuation of application No. 16/822,474, filed on Mar. 18, 2020, granted, now 11,290,805, issued on Mar. 29, 2022.
Application 16/822,474 is a continuation of application No. 15/513,955, granted, now 10,652,650, issued on May 12, 2020, previously published as PCT/US2015/053025, filed on Sep. 29, 2015.
Claims priority of provisional application 62/057,992, filed on Sep. 30, 2014.
Prior Publication US 2024/0048895 A1, Feb. 8, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04R 1/28 (2006.01); H04R 1/02 (2006.01); H04R 1/26 (2006.01); H04R 1/40 (2006.01); H04R 3/14 (2006.01)
CPC H04R 1/2811 (2013.01) [H04R 1/02 (2013.01); H04R 1/025 (2013.01); H04R 1/26 (2013.01); H04R 1/2803 (2013.01); H04R 1/288 (2013.01); H04R 1/403 (2013.01); H04R 3/14 (2013.01); H04R 2201/401 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An electronic device comprising:
a housing;
an audio receiver disposed within the housing and configured to wirelessly receive a digital audio signal from an external device and generate transducer drive signals;
a plurality of power amplifiers disposed within the housing and coupled to receive the transducer drive signals from the audio receiver and generate amplified transducer drive signals;
a plurality of audio transducers disposed within the housing, wherein each audio transducer in the plurality of audio transducers is coupled to receive an amplified transducer drive signal output from one of the plurality of power amplifiers and wherein the plurality of audio transducers include a plurality of tweeters oriented such that a forward face of each diaphragm of the plurality of tweeters is oriented downward; and
one or more acoustic channels defined by horns that redirect sounds generated by the plurality of tweeters to one or more sound output openings of the device housing.