介绍

       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。

案例

      #import<AVFoundation/AVFoundation.h>

- (IBAction)buttonClick {

AVSpeechSynthesizer * synthsizer = [[AVSpeechSynthesizer alloc] init];

AVSpeechUtterance * utterance = [[AVSpeechUtterance alloc] initWithString:@"aosika先生"];//需要转换的文本

utterance.voice = [AVSpeechSynthesisVoice voiceWithLanguage:@"zh-CN"];//国家语言

utterance.rate = 0.4f;//声速

[synthsizer speakUtterance:utterance];

}

语言类别

IOS7包含了一组可以用来合成的声音的嗓音，你可以自定义多种嗓音来合成。

"[AVSpeechSynthesisVoice 0x978a0b0] Language: th-TH",

"[AVSpeechSynthesisVoice 0x977a450] Language: pt-BR",

"[AVSpeechSynthesisVoice 0x977a480] Language: sk-SK",

"[AVSpeechSynthesisVoice 0x978ad50] Language: fr-CA",

"[AVSpeechSynthesisVoice 0x978ada0] Language: ro-RO",

"[AVSpeechSynthesisVoice 0x97823f0] Language: no-NO",

"[AVSpeechSynthesisVoice 0x978e7b0] Language: fi-FI",

"[AVSpeechSynthesisVoice 0x978af50] Language: pl-PL",

"[AVSpeechSynthesisVoice 0x978afa0] Language: de-DE",

"[AVSpeechSynthesisVoice 0x978e390] Language: nl-NL",

"[AVSpeechSynthesisVoice 0x978b030] Language: id-ID",

"[AVSpeechSynthesisVoice 0x978b080] Language: tr-TR",

"[AVSpeechSynthesisVoice 0x978b0d0] Language: it-IT",

"[AVSpeechSynthesisVoice 0x978b120] Language: pt-PT",

"[AVSpeechSynthesisVoice 0x978b170] Language: fr-FR",

"[AVSpeechSynthesisVoice 0x978b1c0] Language: ru-RU",

"[AVSpeechSynthesisVoice 0x978b210]Language: es-MX",

"[AVSpeechSynthesisVoice 0x978b2d0] Language: zh-HK",

"[AVSpeechSynthesisVoice 0x978b320] Language: sv-SE",

"[AVSpeechSynthesisVoice 0x978b010] Language: hu-HU",

"[AVSpeechSynthesisVoice 0x978b440] Language: zh-TW",

"[AVSpeechSynthesisVoice 0x978b490] Language: es-ES",

"[AVSpeechSynthesisVoice 0x978b4e0] Language: zh-CN",汉语

"[AVSpeechSynthesisVoice 0x978b530] Language: nl-BE",

"[AVSpeechSynthesisVoice 0x978b580] Language: en-GB",

"[AVSpeechSynthesisVoice 0x978b5d0] Language: ar-SA",

"[AVSpeechSynthesisVoice 0x978b620] Language: ko-KR",

"[AVSpeechSynthesisVoice 0x978b670] Language: cs-CZ",

"[AVSpeechSynthesisVoice 0x978b6c0] Language: en-ZA",

"[AVSpeechSynthesisVoice 0x978aed0] Language: en-AU",

"[AVSpeechSynthesisVoice 0x978af20] Language: da-DK",

"[AVSpeechSynthesisVoice 0x978b810] Language: en-US",

"[AVSpeechSynthesisVoice 0x978b860] Language: en-IE",

"[AVSpeechSynthesisVoice 0x978b8b0] Language: hi-IN",

"[AVSpeechSynthesisVoice 0x978b900] Language: el-GR",

"[AVSpeechSynthesisVoice 0x978b950] Language: ja-JP"

总结

语音合成器非常简单，多语言方便使用，可以提高应用的访问性。