中文说明：1、基于MATLAB七段均衡器算法。2、输入 EQ频率、带宽、增益，计算出滤波器的系数，并对输入wav音频进行处理，然后输出处理后的wav音频。3、代码简洁高效，易于操作。
English Description：
1. Seven segment equalizer algorithm based on MATLAB. 2. Input EQ frequency, bandwidth and gain, calculate the coefficients of the filter, process the input wav audio, and then output the processed wav audio. 3. The code is simple, efficient and easy to operate.