A little collection of handy conversions to do randomisation and control audio properties

BasicAudioConversions.cs

using UnityEngine;

public class BasicAudioConversions
{
        private static float twelfthRootOfTwo = Mathf.Pow(2, 1.0f / 12);
        public static float St2pitch(float st)
        {
            return Mathf.Clamp(Mathf.Pow(twelfthRootOfTwo, st), 0f, 4f);
        }
        public static float Pitch2st(float pitch)
        {
            return Mathf.Log(pitch, twelfthRootOfTwo);
        }

        public static float DecibelToLinear(float dB)
        {
            if (dB > -80)
                return Mathf.Clamp01(Mathf.Pow(10.0f, dB / 20.0f));
            else
                return 0;
        }
        public static float LinearToDecibel(float linear)
        {
            if (linear > 0)
                return Mathf.Clamp(20.0f * Mathf.Log10(linear), -80f, 0f);
            else
                return -80.0f;
        }
}