objective-c - 在iOS7和iOS 9中AVSpeechSynthesizer发声率各不相同

问题:在iOS 7.x和iOS 8.x中，此代码可以正常工作，但与iOS 7和8中的语速相比，iOS 9.x中的语速越来越慢。

self.synthesizer = [[AVSpeechSynthesizer alloc] init];

self.synthesizer.delegate = self;

AVSpeechUtterance *utterance = [[AVSpeechUtterance alloc] initWithString:[NSString stringWithFormat:@"Hey %@, please choose places to explore or select excursions to see our custom crafted deals",[defaults objectForKey:@"USERNAME"]]];

utterance.voice = [AVSpeechSynthesisVoice voiceWithLanguage:@"en-US"];

utterance.rate = 0.10;

[self.synthesizer speakUtterance:utterance];

最佳答案

[utterance setRate: 0.5f];将完成这项工作

关于objective-c - 在iOS7和iOS 9中AVSpeechSynthesizer发声率各不相同，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/32851129/