How to programmatically use iOS voice synthesizers? (text to speech)

Question

iOS devices have embedded voice synthesizers for Accessibility's VoiceOver feature. Is there a way you can use these synthesizers programmatically to generate text-based sounds?

My problem is: I'm working on a simple app for kids to learn colors and rather than recording the names of the colors in each language i want to support and storing them as audio files, i'd rather generate the sounds at runtime with some text-to-speech feature.

Thanks

[EDIT: this question was asked pre-iOS7 so you should really consider the voted answer and ignore older ones, unless you're a software archeologist]

Answer 1

Starting from iOS 7, Apple provides this API.

See this answer.

Objective-C

#import <AVFoundation/AVFoundation.h> … AVSpeechUtterance *utterance = [AVSpeechUtterance                              speechUtteranceWithString:@"Hello World!"]; AVSpeechSynthesizer *synth = [[AVSpeechSynthesizer alloc] init]; [synth speakUtterance:utterance]; 

Swift

import AVFoundation … let utterance = AVSpeechUtterance(string: "Hello World!") let synth = AVSpeechSynthesizer() synth.speakUtterance(utterance) 

Answer 2

#import <AVFoundation/AVFoundation.h>  AVSpeechSynthesizer *av = [[AVSpeechSynthesizer alloc] init]; AVSpeechUtterance *utterance = [[AVSpeechUtterance alloc]initWithString:@"Text to say"];  [av speakUtterance:utterance];