US 12,445,773 B2
Method and apparatus for reducing reaction forces in loudspeakers
Thomas Barefoot, Portland, OR (US)
Assigned to Barefoot Sound, LLC, Los Angeles, CA (US)
Filed by Barefoot Sound, LLC, Los Angeles, CA (US)
Filed on Aug. 3, 2023, as Appl. No. 18/365,100.
Claims priority of provisional application 63/370,453, filed on Aug. 4, 2022.
Prior Publication US 2024/0048907 A1, Feb. 8, 2024
Int. Cl. H04R 3/02 (2006.01); H03F 3/45 (2006.01); H04R 3/08 (2006.01); H04R 29/00 (2006.01)
CPC H04R 3/02 (2013.01) [H04R 3/08 (2013.01); H04R 29/001 (2013.01); H03F 3/45475 (2013.01); H03F 2200/03 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for reducing reaction forces in loudspeakers, the method comprising:
providing, from a power source connected to a loudspeaker, a current to the loudspeaker;
measuring, using a current sense resistance connected in series to the loudspeaker, the current through the loudspeaker; and
providing, using a voltage-controlled source connected in series to the loudspeaker, a current substantially proportional to the measured current through the loudspeaker to an actuator, wherein the actuator is connected in series to the loudspeaker.