python绘制wav频谱图

要使用Python绘制wav频谱图，你可以使用scipy库和pylab库来实现。下面是一个参考代码，你可以根据自己的需要进行调整：

import wave
import struct
import numpy
from scipy import *
from pylab import *

def Plot_fft_freq_chart(filename, plot=False):
    wavefile = wave.open(filename, 'r')  # 打开wav文件
    nchannels = wavefile.getnchannels()  # 获取声道数
    sample_width = wavefile.getsampwidth()  # 获取采样宽度
    framerate = wavefile.getframerate()  # 获取采样率
    numframes = wavefile.getnframes()  # 获取帧数
    print("channel", nchannels)
    print("sample_width", sample_width)
    print("framerate", framerate)
    print("numframes", numframes)

    y = numpy.zeros(numframes)
    for i in range(numframes):
        val = wavefile.readframes(1)
        left = val = v

    Fs = framerate

    try:
        data, freqs, bins, im = specgram(y, NFFT=1024, Fs=Fs, noverlap=900)
        mm = data<span class="em">1</span><span class="em">2</span>
#### 引用[.reference_title]
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