// Moves the Lowpass Resonance Quality Factor from 0 to 10 following a Sinus function
    // Attach this to an audio source with a LowPassFilter to listen it working.
    @script RequireComponent(AudioSource)
    @script RequireComponent(AudioLowPassFilter)
    function Update() {
        GetComponent(AudioLowPassFilter).lowpassResonaceQ = (Mathf.Sin(Time.time)*5 + 5);
    }

using UnityEngine;
using System.Collections;

[RequireComponent(typeof(AudioSource))]
[RequireComponent(typeof(AudioLowPassFilter))]
public class example : MonoBehaviour {
    void Update() {
        GetComponent<AudioLowPassFilter>().lowpassResonaceQ = Mathf.Sin(Time.time) * 5 + 5;
    }
}

import UnityEngine
import System.Collections

[RequireComponent(AudioSource)]
[RequireComponent(AudioLowPassFilter)]
class example(MonoBehaviour):

    def Update():
        GetComponent[of AudioLowPassFilter]().lowpassResonaceQ = ((Mathf.Sin(Time.time) * 5) + 5)