iOS文本语音

Question

我是快速和iOS应用程序开发的新手。我正在使用AVSpeechSynthesiser创建一个文本到语音应用程序。我想设置一个字符串说在英语，但我希望它把那个特定的字符串翻译成语音，但在不同的语言，如阿拉伯语。我是否能够使用AVSpeechSynthesizer做到这一点，或者我需要使用翻译API来做到这一点。

谢谢你

Answer 1

我创建了一个AVSpeechSynthesizer类来处理从一种语言到另一种语言的转换。这里有一个关于Nhipster的AVSpeechSynthesizer教程，这是学习这方面的一个很好的起点。我没有做翻译，但你可以把那部分弄明白。。。我还创建了一个基本的translator类，将“hello”翻译成“محبا”。您可以在此处看到该项目：

翻译

要使用翻译器，您可能需要将动作绑定到如下按钮：

@IBAction func translateToArabicAction(_ sender: UIButton) {
    // check that there are characters entered in the textField
    if (textToTranslateTextField.text?.characters.count)! > 0 {
        let translatedText = translator.translate(word: (textToTranslateTextField.text?.lowercased())!)
        speechSynthesizer.speak(translatedText, in: Language.arabic.rawValue)
    }
}

@IBAction func translateToEnglishAction(_ sender: UIButton) {
    // check that there are characters entered in the textField
    if (textToTranslateTextField.text?.characters.count)! > 0 {
        let translatedText = translator.translate(word: (textToTranslateTextField.text?.lowercased())!)
        speechSynthesizer.speak(translatedText, in: Language.english.rawValue)
    }
}

语音合成器如下所示：

import AVFoundation

// You can use an enum so you don't have to manually type out character strings. Look them up once and stick them in an enum. From there, you set the language with your enum rather than typing out the string.
enum Language: String {
    case english = "en-US"
    case arabic = "ar-SA"
}

class Speaker: NSObject {

    let synth = AVSpeechSynthesizer()

    override init() {
        super.init()
        synth.delegate = self
    }

    func speak(_ announcement: String, in language: String) {
        print("speak announcement in language \(language) called")
        prepareAudioSession()
        let utterance = AVSpeechUtterance(string: announcement.lowercased())
        utterance.voice = AVSpeechSynthesisVoice(language: language)
        synth.speak(utterance)
    }

    private func prepareAudioSession() {
        do {
            try AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategoryAmbient, with: .mixWithOthers)
        } catch {
            print(error)
        }

        do {
            try AVAudioSession.sharedInstance().setActive(true)
        } catch {
            print(error)
        }
    }

    func stop() {
        if synth.isSpeaking {
            synth.stopSpeaking(at: .immediate)
        }
    }
}

extension Speaker: AVSpeechSynthesizerDelegate {
    func speechSynthesizer(_ synthesizer: AVSpeechSynthesizer, didStart utterance: AVSpeechUtterance) {
        print("Speaker class started")
    }

    func speechSynthesizer(_ synthesizer: AVSpeechSynthesizer, didFinish utterance: AVSpeechUtterance) {
        print("Speaker class finished")
    }
}