How to Remove Silence from an Audio using Python

摘要

There are many ways available that remove the silence part or the dead spaces from an audio file but it’s time consuming to know which one is work best for you. Here in this article I’ll walk you through few commonly used techniques to remove the silence and its pro’s and con’s.

Though there are tools that only detects the silence and does not remove it from the audios implicitly. We can consider that also and use that information to remove the silence explicitly. Before we start lets understand few terminology that we are going to use later 1.Silence Time Threshold : Time duration for which there is no sound intensity (SI) or it is very low that can be consider as silence, most of the times it is fixed. For example if you keep Silence Time Threshold as 10 sec then your algorithm should detect dead/silence spaces greater than or equal to 10 sec. 2. Sound Intensity Threshold : Like time threshold, it is the threshold for sound intensity. For example if intensity threshold is 45db then the intensities those are less than 45db are considered as silent. We can keep it fixed throughout the audio or can make it dynamic based on the requirement. Lets begin …

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