US 12,284,476 B2
Sound reproducing apparatus and method
Timo Lamberg, Tampere (FI); and Juha Backman, Tampere (FI)
Assigned to AAC Technologies Pte. Ltd., Singapore (SG)
Filed by AAC Technologies Pte. Ltd., Singapore (SG)
Filed on Jan. 6, 2023, as Appl. No. 18/093,827.
Prior Publication US 2024/0236550 A1, Jul. 11, 2024
Int. Cl. H04R 1/24 (2006.01); H04R 1/10 (2006.01); H04R 3/04 (2006.01); H04R 3/14 (2006.01)
CPC H04R 1/24 (2013.01) [H04R 1/1008 (2013.01); H04R 1/1041 (2013.01); H04R 1/1075 (2013.01); H04R 3/04 (2013.01); H04R 3/14 (2013.01); H04R 2460/13 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A sound reproducing apparatus comprising:
a signal processing unit, configured to receive a sound signal and divide the sound signal into a first frequency component and a second frequency component; wherein the first frequency component is at least partially different from the second frequency component, and the signal processing unit comprises a delay unit configured to delay the second frequency band component;
a first transducer, configured to convert the first frequency component from the signal processing unit into airborne sound; and
a second transducer, configured to convert the second frequency component from the delay unit into bone conduction sound, wherein
a time range for the delay is from 2 ms to 100 ms.