文字转语音

1.导入框架 AVFoundation

注意：三个关键类

AVSpeechSynthesizer: 可以假想成一个可以说话的人
AVSpeechSynthesisVoice: 可以假想成人的声音
AVSpeechUtterance: 可以假想成要说的一段话

#import 

@interface TmfSpeakTool : NSObject

- (void)transtoVoiceWithString:(NSString *)str;
- (void)pauseAv;

@end

#import 
@interface TmfSpeakTool ()

@property (nonatomic, strong) AVSpeechSynthesizer *aVSpeechSynthesizer;


//@property(nonatomic)float pitchMultiplier;// [0.5 - 2] Default = 1，声调，不怕逗死你就设成2
@end
@implementation TmfSpeakTool

- (AVSpeechSynthesizer *)aVSpeechSynthesizer{
   if (!_aVSpeechSynthesizer) {
       _aVSpeechSynthesizer = [[AVSpeechSynthesizer alloc] init];
       _aVSpeechSynthesizer.delegate = self;
   }
   return _aVSpeechSynthesizer;
}

- (void)pauseAv{
   

   if (self.aVSpeechSynthesizer.paused) {
       [self.aVSpeechSynthesizer continueSpeaking];
   }else{
   [self.aVSpeechSynthesizer pauseSpeakingAtBoundary:AVSpeechBoundaryImmediate];
   }
}

- (void)transtoVoiceWithString:(NSString *)str{
   
 
   if (self.aVSpeechSynthesizer.speaking) 
       return;
   AVSpeechUtterance * aVSpeechUtterance = [[AVSpeechUtterance alloc] initWithString:str];
   
   aVSpeechUtterance.rate = AVSpeechUtteranceDefaultSpeechRate;// 设置语速，范围0-1，注意0最慢，1最快；
   
   aVSpeechUtterance.voice =[AVSpeechSynthesisVoice voiceWithLanguage:@"zh-CN"];//设置发音，这是中文普通话
   
   [self.aVSpeechSynthesizer speakUtterance:aVSpeechUtterance];//开始阅读

}
#pragma mark - =========AVSpeechSynthesizerDelegate =========
- (void)speechSynthesizer:(AVSpeechSynthesizer *)synthesizer didStartSpeechUtterance:(AVSpeechUtterance *)utterance{
   NSLog(@"开始阅读");

}
- (void)speechSynthesizer:(AVSpeechSynthesizer *)synthesizer didFinishSpeechUtterance:(AVSpeechUtterance *)utterance{
   [self.aVSpeechSynthesizer stopSpeakingAtBoundary:AVSpeechBoundaryImmediate];
   NSLog(@"阅读完毕");
}
- (void)speechSynthesizer:(AVSpeechSynthesizer *)synthesizer didPauseSpeechUtterance:(AVSpeechUtterance *)utterance{
   
   NSLog(@"阅读暂停");

}
- (void)speechSynthesizer:(AVSpeechSynthesizer *)synthesizer didContinueSpeechUtterance:(AVSpeechUtterance *)utterance{
   
   NSLog(@"阅读继续");

}
- (void)speechSynthesizer:(AVSpeechSynthesizer *)synthesizer didCancelSpeechUtterance:(AVSpeechUtterance *)utterance{
   
   
}

- (void)speechSynthesizer:(AVSpeechSynthesizer *)synthesizer willSpeakRangeOfSpeechString:(NSRange)characterRange utterance:(AVSpeechUtterance *)utterance{
   
  
}

github地址