US 12,482,478 B2
Method and apparatus for improving sound quality of speaker
Peng Qin, Hangzhou (CN); and Yiwei Kou, Hangzhou (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by HUAWEI TECHNOLOGIES CO., LTD., Guangdong (CN)
Filed on Dec. 20, 2023, as Appl. No. 18/390,769.
Application 18/390,769 is a continuation of application No. PCT/CN2022/101678, filed on Jun. 27, 2022.
Claims priority of application No. 202110745517.3 (CN), filed on Jun. 30, 2021.
Prior Publication US 2024/0135946 A1, Apr. 25, 2024
Int. Cl. G10L 21/02 (2013.01); H04R 3/04 (2006.01)
CPC G10L 21/02 (2013.01) [H04R 3/04 (2013.01); H04R 2430/01 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for improving sound quality of a speaker, comprising:
performing frequency division on an input signal of the speaker to obtain a first low-frequency input signal and a first high-frequency input signal, wherein the input signal of the speaker is a time domain signal, the first low-frequency input signal comprises a signal having a frequency lower than a first preset frequency in the input signal, and the first high-frequency input signal comprises a signal having a frequency higher than the first preset frequency in the input signal;
performing transient detection on the first low-frequency input signal to determine whether the first low-frequency input signal is a transient signal;
in response to determining that the first low-frequency input signal is the transient signal, performing signal envelope modulation on the first low-frequency input signal to obtain a second low-frequency input signal, wherein a startup voltage of the second low-frequency input signal is higher than a startup voltage of the first low-frequency input signal, and loudness of the second low-frequency input signal is greater than loudness of the first low-frequency input signal; and
determining an output signal of the speaker based on the second low-frequency input signal and the first high-frequency input signal.