How to do fade-in sound in Python??
<p>def fade_in (snd, fade_length):
'''doing a sound fade-in for that wave file'''
    new_snd = sound.copy(snd)</p>

<pre><code>for sample in new_snd:
    snd_index = sound.get_index(sample)
    factor = 0
    snd_samp = sound.get_sample(snd, snd_index)
    if snd_index &lt;= fade_length:
        left = (sound.get_left(snd_samp) * factor)
        right = (sound.get_right(snd_samp) * factor)
        factor += 0.25
        sound.set_values(sample,int(left),int(right))
    else:
        left = sound.get_left(sample)
        right = sound.get_right(sample)
        sound.set_values(sample, int(left), int(right))

return new_snd
</code></pre>
