擅长：python、mysql、java
<pre><code>from pydub import AudioSegment, effects
rawsound = AudioSegment.from_file("./input.m4a", "m4a")
normalizedsound = effects.normalize(rawsound)
normalizedsound.export("./output.wav", format="wav")
</code></pre>
<p>之前：</p>
<p><img src="https://i.stack.imgur.com/z0Y5n.png" alt="Before image"/></p>
<p>之后：</p>
<p><img src="https://i.stack.imgur.com/eiUBR.png" alt="After image"/></p>
