AVSpeechSynthesizer - Text-to-speech function

import UIKit

import AVFoundation

class ViewController: UIViewController {

    

    override func viewDidLoad() {

        super.viewDidLoad()

        

        let mySynthesizer = AVSpeechSynthesizer()

        let myUtterence = AVSpeechUtterance(string: "Hello World. Testing 1 2 3.")

        myUtterence.rate = AVSpeechUtteranceMinimumSpeechRate

        myUtterence.voice = AVSpeechSynthesisVoice(language: "en-au")

        myUtterence.pitchMultiplier = 0.5 //between 0.5 and 2.0. Default is 1.0.

        mySynthesizer.speakUtterance(myUtterence)

    }

Note:
Language List