The audio sound is not off onclick in the same scene and it off 50% in second screen .... but i require to mute the audio in same screen with all audio mute

[ashwanidv100]

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class Volume : MonoBehaviour {

public Sprite VolumeOn, VolumeOff;
private SpriteRenderer spriteRenderer;

void Start () {
	spriteRenderer = gameObject.GetComponent<SpriteRenderer>();
	SetVolume(PlayerPrefs.GetInt("volume", 50) != 50 ? false : true);
}

void Update () {
	if(isTouched()) {
		SetVolume(PlayerPrefs.GetInt("volume", 50) != 50 ? true : true);
	}
}

private void SetVolume(bool IsOn) {
	if(IsOn) {
		spriteRenderer.sprite = VolumeOn;
		PlayerPrefs.SetInt("volume", 50);
	} else {
		spriteRenderer.sprite = VolumeOff;
		PlayerPrefs.SetInt("volume", 0);
	}
}

public bool isTouched() {
	bool result = false;
	if(Input.touchCount == 1) {
		if(Input.touches[0].phase == TouchPhase.Ended) {
			Vector3 wp = Camera.main.ScreenToWorldPoint(Input.GetTouch(0).position);
			Vector2 touchPos = new Vector2(wp.x, wp.y);
			if (GetComponent<Collider2D>() == Physics2D.OverlapPoint(touchPos)) {
				result = true;
			}
		}
	}
	if(Input.GetMouseButtonUp(0)) {
		Vector3 wp = Camera.main.ScreenToWorldPoint(Input.mousePosition);
		Vector2 mousePos = new Vector2(wp.x, wp.y);
		if (GetComponent<Collider2D>() == Physics2D.OverlapPoint(mousePos)) {
			result = true;
		}
	}
	return result;
}

}