Aac Technologies (nanjing) Co., Ltd.

Yuheng Jiang

Lijian Ye

Ruizhi Lan

Hongling Fu

Kejia Liu

A coaxial speaker protection method, a coaxial speaker protection system, a coaxial speaker protection device, and a coaxial speaker protector are provided. The coaxial speaker protection method includes modeling a temperature of a tweeter to obtain a tweeter voltage-temperature transfer function, modeling a temperature and an amplitude of a woofer to obtain a woofer voltage-amplitude-temperature transfer function, modeling a coaxial device having the tweeter and the woofer to obtain a thermal conduction function of the coaxial device, predicting a temperature at a next moment of the tweeter according to temperature information fed back by a current at a previous moment of the tweeter, etc. The tweeter and the woofer are protected through a feedforward manner, so that sound quality of a coaxial speaker is improved.

Coaxial speaker protection method, coaxial speaker protection system, coaxial speaker protection device, and coaxial speaker protector

A coaxial speaker protection method, a coaxial speaker protection system, a coaxial speaker protection device, and a coaxial speaker protector are provided. The coaxial speaker protection method includes modeling a temperature of a tweeter to obtain a tweeter voltage-temperature transfer function, modeling a temperature and an amplitude of a woofer to obtain a woofer voltage-amplitude-temperature transfer function, modeling a coaxial device having the tweeter and the woofer to obtain a thermal conduction function of the coaxial device, calculating a current temperature of the tweeter according to a current voltage of the tweeter, calculating a current temperature of the woofer according to a current voltage of the woofer, etc. The tweeter and the woofer are protected through a feedforward manner, so that sound quality of a coaxial speaker is improved.

This application provides a system for generating a drive signal and a method for generating a drive signal for driving a two-in-one device integrating a first component capable of generating sound and a second component capable of generating vibration. The system includes an audio signal pre-processing module, configured to perform low-frequency filtering and acoustic effect processing on an input signal according to a high-pass filtering parameter to obtain an audio signal; a vibration signal generation module, configured to generate a vibration signal based on an acoustic characteristic of the audio signal or a preset vibration library; a signal synthesis module, configured to superpose the audio signal with the vibration signal to output the drive signal; and an amplitude-limiting control module, configured to determine whether the audio signal and the vibration signal exceeds a maximum allowable range when superposed, and attenuate the audio signal and/or the vibration signal.

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Nanjing, China

Yuheng Jiang