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  • TextToSpeech API provided by Apple

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    Apple has provided a powerful api to play audio from text and here are the steps to achieve:
     

    1-  Import AVFoundation framework

     

    2- Initialise AVSpeechSynthesizer(as below)

    let synthesizer = AVSpeechSynthesizer()

     

    3- Create an instance of AVSpeechUtterance, using this you can set various parameters like voice, language, pitch, delay and rate to text to be spoken.

    let utterance = AVSpeechUtterance(string: text to be spoken)

     

    4- Assign speak utterance to synthesise initialzed above.

    synthesizer.speakUtterance(utterance)

     

    5- One can use synthesizer object to stop and pause speech using methods provided:
     

    func stopSpeakingAtBoundary(boundary: AVSpeechBoundary) -> Bool
    func pauseSpeakingAtBoundary(boundary: AVSpeechBoundary) -> Bool
    

    above AVSpeechBoundary is speech constraint which describse when speech is to be paused or stopped.


    Sample Code (In Swift)

    let synthesizer = AVSpeechSynthesizer()
                	let utterance = AVSpeechUtterance(string: text to be spoken)
                	utterance.rate = 0.5
               	 utterance.voice = AVSpeechSynthesisVoice(language: "fr-FR")
               	 synthesizer.speakUtterance(utterance)

     

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