python音频制频谱图时，IndexError: boolean index did not match indexed array along dimension 0; dimension is 21888 but corresponding boolean dimension is 43776

Question

#　读取音频文件
#　sample_rate：采样率
#  noised_sigs:　存储音频中每个采样点的采样位移
sample_rate, noised_sigs = wf.read('A.mp3.wav')
print(sample_rate, noised_sigs.shape)
times = np.arange(noised_sigs.size) / sample_rate

plt.figure('Filter', facecolor='lightgray')
plt.subplot(221)
plt.title('Time Domain', fontsize=16)
plt.ylabel('Signal', fontsize=12)
plt.tick_params(labelsize=10)
plt.grid(linestyle=':')
plt.plot(times[:178], noised_sigs[:178],c='orangered', label='Noised')
plt.legend()

#基于傅里叶变换，获取音频频域信息，绘制音频频域的：频率/能量图像。
#　傅里叶变换后，绘制频域图像
freqs = nf.fftfreq(times.size, times[1]-times[0])
complex_array = nf.fft(noised_sigs)
pows = np.abs(complex_array)

plt.subplot(222)
plt.title('Frequency Domain', fontsize=16)
plt.ylabel('Power', fontsize=12)
plt.tick_params(labelsize=10)
plt.grid(linestyle=':')
plt.semilogy(freqs[freqs>0], pows[freqs>0], c='limegreen',label='Noised')
plt.legend()

运行结果：
48000 (21888, 2)
Traceback (most recent call last):
File "E:/py0524/5.py", line 35, in

plt.semilogy(freqs[freqs>0], pows[freqs>0], c='limegreen',label='Noised')

IndexError:boolean index did not match indexed array along dimension 0; dimension is 21888 but corresponding boolean dimension is 43776

Process finished with exit code 1

是freqs和pows维数不匹配吗，请问要如何修改呢QAQ

Answer 1

如果你把读入的音频文件换成单通道的，就可以解决了