Chorus modulation rate in hz. 0.0 to 20.0. Default = 0.8 hz.

	// Set the rate on the chorus filter to 15hz.
	@script RequireComponent(AudioSource)
	@script RequireComponent(AudioChorusFilter)
	function Start() {
		GetComponent(AudioChorusFilter).rate = 15;
	}

using UnityEngine;
using System.Collections;

[RequireComponent(typeof(AudioSource))]
[RequireComponent(typeof(AudioChorusFilter))]
public class Example : MonoBehaviour {
    void Start() {
        GetComponent<AudioChorusFilter>().rate = 15;
    }
}

import UnityEngine
import System.Collections

[RequireComponent(typeof(AudioSource))]
[RequireComponent(typeof(AudioChorusFilter))]
public class Example(MonoBehaviour):

	def Start() as void:
		GetComponent[of AudioChorusFilter]().rate = 15