AVSpeechSynthesizer language synthesizer,

AVSpeechSynthesizer language synthesizer,

The speech synthesizer technology is launched by iOS7, which can implement the non-network speech function and support multiple languages.

1. import <AVFoundation/AVFoundation. h>

Define a member variable AVSpeechSynthesizer * _ synthesizer for language synthesis;

Define a member variable AVSpeechSynthesisVoice * _ voice, instantiate the language of speech (Chinese and English)

　　　　

2. instantiate the language and initialize the language synthesizer.

// If the text content is Chinese, useZh_CN; if the text content is English, use en-US;

　　　　_voice = [AVSpeechSynthesisVoice voiceWithLanguage:@"en-US"]; //Zh_CN ChineseEn-US English

// To recite the speech, a speech synthesizer is required to initialize the language synthesizer.

      _synthesizer = [[AVSpeechSynthesizer alloc] init];

3. instantiate the voice object AVSpeechUtterance and specify the content to be read.

// Instantiate the AVSpeechUtterance object and specify the read content

　　　　AVSpeechUtterance *utterance = [AVSpeechUtterance speechUtteranceWithString:_textView.text];

4. Specify the language and recitation speed

// Specify the language

Utterance. voice = _ voice;

// Speech speed

Utterance. rate = 0.3; // 0.1 Chinese characters. The English version is 0.3. The actual version prevails.

5. Start

          [_synthesizer speakUtterance:utterance];