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Question by DennyFarts · Apr 08, 2018 at 11:23 PM · audioaudioclip

How can I get the loudest parts of an audio clip?

In, my game, I want the user to be able to put their own music in the game. Then, I will need to process the music and split it into the loudest parts.

I was wondering how to find the loudest parts of an audio clip in unity and getting the start time of the loudest part. Then, I was going to use that information and make sub clips using this function (not written by me; answer by jdetter at https://answers.unity.com/questions/993241/how-to-play-specific-part-of-the-audio.html):

  /**
   * Creates a sub clip from an audio clip based off of the start time
   * and the stop time. The new clip will have the same frequency as
   * the original.
   */
  private AudioClip MakeSubclip(AudioClip clip, float start, float stop)
  {
      /* Create a new audio clip */
      int frequency = clip.frequency;
      float timeLength = stop - start;
      int samplesLength = (int)(frequency * timeLength);
      AudioClip newClip = AudioClip.Create(clip.name + "-sub", samplesLength, 1, frequency, false);
      /* Create a temporary buffer for the samples */
      float[] data = new float[samplesLength];
      /* Get the data from the original clip */
      clip.GetData(data, (int)(frequency * start));
      /* Transfer the data to the new clip */
      newClip.SetData(data, 0);
      /* Return the sub clip */
      return newClip;
  }


Then, once I have the loudest parts of the user's music stored in an array of subclips, I will play each subclip when a certain event in the game occurs. In order to do this, I need to get the loudest parts during an audio clip.

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