iOS語音合成

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蘋果公司在iOS7中推出了語音合成的技術，無需網路環境也可以實現語音合成。

 

iOS7語音合成的主要的API如下：

 

1、AVSpeechUtterance，是語音合成的基本單位，它封裝影響語音合成的需要的一些參數：語音、語調、語速和延遲等。

 

2、AVSpeechSynthesisVoice，是語音合成中的Voice對象，它主要包括語音和地區兩個方面。

 

3、AVSpeechSynthesizer，語音合成器的管理類，通過speakUtterance:方法管理AVSpeechSynthesizer。

 

4、AVSpeechSynthesizerDelegate，是AVSpeechSynthesizer的委託協議。

 

代碼如下：

 

#import "DemoVC36.h"

#import

@interface DemoVC36 ()@property (weak, nonatomic) IBOutlet UITextView *textView;

@property (weak, nonatomic) IBOutlet UISlider *slider;

@property (nonatomic, strong) AVSpeechSynthesizer *speechSynthesizer;

@end

@implementation DemoVC36

- (void)viewDidLoad {

[super viewDidLoad];

//為TextView

[self.textView.layer setBorderWidth:0.5f];

[self.textView.layer setBorderColor:[UIColor grayColor].CGColor];

[self.textView setDelegate:self];

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

self.speechSynthesizer.delegate = self;

}

-(BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text{

BOOL retval = TRUE;

if ([text isEqualToString:@"\n"]) {

[self.textView resignFirstResponder];

retval = FALSE;

}

return retval;

}

- (IBAction)speakButtonWasPressed:(UIButton *)sender {

NSString *str = @"wei fang is a handsome man";

AVSpeechUtterance *utt = [AVSpeechUtterance speechUtteranceWithString:str];

utt.rate = [self.slider value];

[self.speechSynthesizer speakUtterance:utt];

}

- (IBAction)speechSpeedShouldChange:(id)sender {

UISlider *slider = (UISlider *)sender;

NSInteger val = round(slider.value);

NSLog(@"%@",[NSString stringWithFormat:@"%ld",val]);

}

#pragma mark--AVSpeechSynthesizerDelegate

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

NSLog(@"語音合成開始");

}

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

NSLog(@"語音合成完成");

}

@end

 

iOS語音合成