US 12,452,595 B2
Combo system and method of driving combo system
Ruizhi Lan, Nanjing (CN)
Assigned to AAC Technologies (Nanjing) Co., Ltd., Nanjing (CN)
Filed by AAC Technologies (Nanjing) Co., Ltd., Jiangsu (CN)
Filed on Dec. 29, 2023, as Appl. No. 18/399,778.
Application 18/399,778 is a continuation of application No. PCT/CN2023/087034, filed on Apr. 7, 2023.
Prior Publication US 2024/0340586 A1, Oct. 10, 2024
Int. Cl. H04R 3/04 (2006.01)
CPC H04R 3/04 (2013.01) 16 Claims
OG exemplary drawing
 
1. A Combo system, comprising: a loudspeaker, a motor connected in series with the loudspeaker, an analog frequency divider connected to the loudspeaker and the motor, a power amplifier connected to the analog frequency divider, a signal fuser connected to the power amplifier, and a nonlinear compensator connected to the signal fuser;
wherein, the nonlinear compensator is configured to generate a loudspeaker pre-distorted digital signal, wherein the loudspeaker pre-distorted digital signal comprises an original loudspeaker pre-distorted digital signal generated by the nonlinear compensator pre-distorting a loudspeaker digital signal of the loudspeaker; the signal fuser is configured to fuse the loudspeaker pre-distorted digital signal with a motor digital signal of the motor to obtain a fused digital signal; the power amplifier is configured to perform digital-to-analog conversion on the fused digital signal to obtain a fused analog signal and to perform power amplification on the fused analog signal; the analog frequency divider is configured to perform frequency division on the fused analog signal that is power-amplified to obtain a loudspeaker analog signal and a motor analog signal, the loudspeaker analog signal is configured to drive the loudspeaker, and the motor analog signal is configured to drive the motor;
the Combo system further comprises a frequency-division predictor connected to the nonlinear compensator; the frequency-division predictor is configured to predict voltage data loaded on two ends of the loudspeaker if the fused digital signal is transmitted to the analog frequency divider and is divided by the analog frequency divider, the nonlinear compensator is further configured to correct the original loudspeaker pre-distorted digital signal based on the voltage data to obtain a corrected loudspeaker pre-distorted digital signal and enable a phase of the loudspeaker analog signal to be consistent with a phase of the corrected loudspeaker pre-distorted digital signal and enable an amplitude of the loudspeaker analog signal to be consistent with an amplitude of the corrected loudspeaker pre-distorted digital signal, the loudspeaker pre-distorted digital signal further comprises the corrected loudspeaker pre-distorted digital signal.