iOS speech synthesis

In IOS7, Apple has introduced TTS technology that enables speech synthesis without the need for a network environment.

The main APIs for iOS7 speech synthesis are as follows:

1, Avspeechutterance, is the basic unit of speech synthesis, which encapsulates some parameters that affect the need for speech synthesis: voice, intonation, speed, and delay.

2, Avspeechsynthesisvoice, is the voice object in speech synthesis, it mainly includes voice and region two aspects.

3, Avspeechsynthesizer, voice synthesizer management class, through the Speakutterance: Method Management Avspeechsynthesizer.

4, Avspeechsynthesizerdelegate, is the avspeechsynthesizer of the Commission agreement.

The code is as follows:

#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];

To 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 (@ "speech synthesis start");

}

-(void) SpeechSynthesizer: (Avspeechsynthesizer *) synthesizer didfinishspeechutterance: (Avspeechutterance *) utterance{

NSLog (@ "speech synthesis complete");

}

@end

iOS speech synthesis