AudioUtils.cs

using UnityEngine;
using Janus;
using System;
using System.IO;

public static class AudioUtils
{
    public static void Play (this AudioSource audio, AudioClip clip,
        float volume = 1f, float pitch = 1f, float relativeStartTime = 0f)
    {
        audio.clip = clip;
        audio.volume = volume;
        audio.pitch = pitch;

        if (relativeStartTime > -(clip.length / pitch) && relativeStartTime <= 0f)
        {
            if (relativeStartTime < 0f)
                audio.time = -relativeStartTime * pitch;

            audio.Play();
        }
    }

    public static void Play (this AudioSource audio, string clipId,
        float volume = 1f, float pitch = 1f, float relativeStartTime = 0f)
    {
        var clip = Resources.Load<AudioClip>(clipId);
        
        if (clip != null)
            Play(audio, clip, volume, pitch, relativeStartTime);
    }

    public static AudioSource PlayPooledSound (this GameObject go, AudioClip clip,
        float volume = 1f, float pitch = 1f)
    {
        return SoundPool.Play(clip, go, volume, pitch);
    }

    public static AudioSource PlayPooledSound (this Component component, AudioClip clip,
        float volume = 1f, float pitch = 1f)
    {
        return SoundPool.Play(clip, component, volume, pitch);
    }

    public static AudioSource PlayPooledSound (this GameObject go, string clipId,
        float volume = 1f, float pitch = 1f)
    {
        return SoundPool.Play(clipId, go, volume, pitch);
    }

    public static AudioSource PlayPooledSound (this Component component, string clipId,
        float volume = 1f, float pitch = 1f)
    {
        return SoundPool.Play(clipId, component, volume, pitch);
    }
}