avspeechsynthesizer

This is finally possible, in iOS 13 AVSpeechSynthesizer now has write(_:toBufferCallback:): let synthesizer = AVSpeechSynthesizer() let utterance = AVSpeechUtterance(string: “test 123”) utterance.voice = AVSpeechSynthesisVoice(language: “en”) var output: AVAudioFile? synthesizer.write(utterance) { (buffer: AVAudioBuffer) in guard let pcmBuffer = buffer as? AVAudioPCMBuffer else { fatalError(“unknown buffer type: \(buffer)”) } if pcmBuffer.frameLength == 0 { // done } … Read more