音频分频网络电路实现——以有源分频功率放大电路为例  

Implementation of Audio Crossover Network Circuit——Take An Active Crossover Power Amplification Circuit as An Example

作　　者：武显浩 司万顺 范祎来 吴佳洋 郭懿锋 WU Xianhao;SI Wanshun;FAN Yilai;WU Jiayang;GUO Yifeng(School of Electronic and Information Engineering,Shenyang Aerospace University,Shenyang 110136,China)

机构地区：[1]沈阳航空航天大学电子信息工程学院,辽宁沈阳110136

出　　处：《电声技术》2022年第11期107-110,共4页Audio Engineering

基　　金：沈阳航空航天大学大学生创新创业项目(X202210143073)。

摘　　要：设计、制作一个采用有源分频网络的音频放大电路,用来实现音频信号的分频和功率放大,使音频信号中的高低频信号分开,以实现高频信号或者低频信号的自定义获取。再各自耦合一个功率放大器,将信号放大到一个可更容易检测的范围内,从而实现整个电路的功能。所设计的电路可实现幅度在10~100 mV、频率在0.1~20 kHz的音频信号处理,使所得到的高频信号在10~20 kHz带内波动<3 dB,低频信号在0.1~1 kHz带内波动<3 dB。The project aims to design and fabricate an audio amplification circuit using an active crossover network to realize the two-way and power amplification of the audio signal,so that the high-frequency signal in the audio signal is separated from the lowfrequency signal to realize that the high-frequency signal or low-frequency signal can be obtained at will,and then each of them is coupled with a power amplifier to amplify the signal to a more easily detectable range to realize the entire circuit function.The circuit designed in this paper can realize audio signal processing with an amplitude range of 10~100 mV and a frequency range of 0.1~20kHz,so that the obtained high-frequency signal fluctuates by<3 dB in the 10~20 kHz band,and the low-frequency signal fluctuates by<3 dB in the 0.1~1 kHz band.

关 键 词：有源分频网络 功率放大 高频信号 低频信号 

分 类 号：TN912.2[电子电信—通信与信息系统]