对wav格式文件，绘制1/3倍频程频谱图，频率范围为20-10000Hz。fromscipy.ioimportwavfilefromscipy.fftimportfftimportnumpyasnpimportmatplotlib.pyplotaspltimportlibrosa#fromscipy.signalimporthammingdefone_third_octave(audio_path):samp