US 12,335,699 B2
System for generating a drive signal and method for generating a drive signal
Lijian Ye, Nanjing (CN); and Yuheng Jiang, Nanjing (CN)
Assigned to AAC Technologies (Nanjing) Co., Ltd., Nanjing (CN)
Filed by AAC Technologies (Nanjing) Co., Ltd., Nanjing (CN)
Filed on May 24, 2023, as Appl. No. 18/323,395.
Application 18/323,395 is a continuation of application No. PCT/CN2023/089866, filed on Apr. 21, 2023.
Claims priority of application No. 202310343205.9 (CN), filed on Mar. 31, 2023.
Prior Publication US 2024/0334126 A1, Oct. 3, 2024
Int. Cl. H04R 3/04 (2006.01); G08B 6/00 (2006.01)
CPC H04R 3/04 (2013.01) [G08B 6/00 (2013.01); H04R 2430/01 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A system for generating a drive signal, the drive signal being configured to drive a two-in-one device integrating a first component capable of generating sound and a second component capable of generating vibration; and the system comprising:
an audio signal pre-processing module;
a vibration signal generation module;
a signal synthesis module; and
an amplitude-limiting control module;
wherein the audio signal pre-processing module is configured to receive an input signal, and perform low-frequency filtering and acoustic effect processing on the input signal according to a high-pass filtering parameter to obtain an audio signal;
the vibration signal generation module is configured to generate a vibration signal based on an acoustic characteristic of the audio signal or a preset vibration library;
the signal synthesis module is configured to superpose the audio signal with the vibration signal to output the drive signal for driving the two-in-one device; and
the amplitude-limiting control module is configured to determine whether the audio signal and the vibration signal exceed a maximum allowable range of the first component and the second component when the audio signal and the vibration signal are superposed, and attenuate the audio signal and/or the vibration signal.