我的 AVSpeechSynthesizer（文本到语音）正在以非常快的速度说话，我不知道如何减慢它的速度

Question

所以我在 swift 2.0 Xcode 7.1.1 上有一个完美的 AVSpeechSynthesizer（文本到语音），但我不知道如何让它像我们以正常速度说话一样甚至更慢？代码：

 import UIKit
 import AVKit
 import AVFoundation

 class HomePage: UIViewController {
 let Voice = AVSpeechSynthesizer()

 override func viewDidLoad() {
    super.viewDidLoad()
 let TilteSpeakingText1 = AVSpeechUtterance(string: "Welcome back. The database should still be up for you")
            Voice.speakUtterance(TilteSpeakingText1)
            TilteSpeakingText1.rate = 0.003
            TilteSpeakingText1.pitchMultiplier = 0.60
            TilteSpeakingText1.volume = 0.75
            TilteSpeakingText1.postUtteranceDelay = 0.01
 }
}

Answer 1

AVSpeechUtterance 的比率为属性。尝试降低速率。

Answer 2

设置速率、音高和音量属性后说出话语：

//Voice.speakUtterance(TilteSpeakingText1) <-remove this
            TilteSpeakingText1.rate = 0.003
            TilteSpeakingText1.pitchMultiplier = 0.60
            TilteSpeakingText1.volume = 0.75
            TilteSpeakingText1.postUtteranceDelay = 0.01
Voice.speakUtterance(TilteSpeakingText1)//call here instead

Answer 3

试试这个 -:

let speechUtterance: AVSpeechUtterance = AVSpeechUtterance(string: text)
speechUtterance.rate = AVSpeechUtteranceMaximumSpeechRate / 2.0

我的 AVSpeechSynthesizer（文本到语音）正在以非常快的速度说话，我不知道如何减慢它的速度

My AVSpeechSynthesizer (text to speech) is talking at a very fast rate and I can't figure out how to slow it down

xcode

ios

avspeechsynthesizer

swift