初识--AVSpeechSynthesizer

什么是AVSpeechSynchronizer?

从IOS5开始,IOS系统已经在siri上集成了语音合成的功能,但是是私有API。但是在IOS7,新增了一个简单的API----AVSpeechSynthesizer来做这件事情。目前比较主流的语音识别和合成的工具“科大讯飞”很强大,使用起来也很简单,当然如果是简单的“文本到语音”的功能,在iOS中已经提供好了相关的API,开发者可以使用AV Foundation中的AVSpeechSynthesizer类来实现这个功能。

那我就直接上代码喽:

#import "ViewController.h"
#import <AVFoundation/AVFoundation.h>

@interface ViewController ()<AVSpeechSynthesizerDelegate>//AVSpeechSynthesizer代理

//声明AVSpeechSynthesizer属性
@property (nonatomic, strong) AVSpeechSynthesizer *synthesizer;

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    
    //创建一个AVSpeechSynthesizer对象
    self.synthesizer = [[AVSpeechSynthesizer alloc]init];
    //设置代理人为当前控制器对象
    self.synthesizer.delegate = self;
    //创建AVSpeechUtterance对象(播放的语音内容都是通过实例化AVSpeechUtterance而得到)
    AVSpeechUtterance *utterance = [[AVSpeechUtterance alloc]initWithString:@"你好,就是爱你爱着你,你能把我咋地"];
    
    // 语速 0.0f~1.0f
    utterance.rate = 0.5f;
    // 声音的音调 0.5f~2.0f
    utterance.pitchMultiplier = 0.8f;
    // 使播放下一句的时候有0.1秒的延迟
    utterance.postUtteranceDelay = 0.1f;
    
    //系统默认是不支持中文的(下面是设置中文)
    utterance.voice = [AVSpeechSynthesisVoice voiceWithLanguage:@"zh-CN"];//国家语言
    //播放
    [_synthesizer speakUtterance:utterance];
}
//AVSpeechSynthesizer的代理方法
-(void)speechSynthesizer:(AVSpeechSynthesizer *)synthesizer didStartSpeechUtterance:(AVSpeechUtterance *)utterance{
    
    NSLog(@"开始播放");
}
-(void)speechSynthesizer:(AVSpeechSynthesizer *)synthesizer didPauseSpeechUtterance:(AVSpeechUtterance *)utterance{
    
    NSLog(@"暂停播放");
}
-(void)speechSynthesizer:(AVSpeechSynthesizer *)synthesizer didFinishSpeechUtterance:(AVSpeechUtterance *)utterance{
    NSLog(@"结束播放");
}
-(void)speechSynthesizer:(AVSpeechSynthesizer *)synthesizer didCancelSpeechUtterance:(AVSpeechUtterance *)utterance{
    NSLog(@"退出播放状态");
}
-(void)speechSynthesizer:(AVSpeechSynthesizer *)synthesizer didContinueSpeechUtterance:(AVSpeechUtterance *)utterance{
    NSLog(@"跳出播放状态");
}
-(void)speechSynthesizer:(AVSpeechSynthesizer *)synthesizer willSpeakRangeOfSpeechString:(NSRange)characterRange utterance:(AVSpeechUtterance *)utterance{
    NSLog(@"播放状态时,当前所播放的字符串范围,及AVSpeechUtterance实例(可通过此方法监听当前播放的字或者词");
}

@end

 

posted on 2016-07-20 15:52  刘志武  阅读(475)  评论(1编辑  收藏  举报

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