一.简单的封装了一下 iOS 系统内建的语音合成器(iOS 7以后提供的 API).
////------------------------------------------------
////封装iOS自带的语音合成器
@interfaceZRRSpeechSynthesizer :NSObject
//单例模式
+ (ZRRSpeechSynthesizer*)sharedSpeechInstance;
//设置单例的播放语言
- (BOOL)setSpeechLanguage:(NSString*)language;
//开始语音播报
- (void)startSpeechText:(NSString*)text;
//暂停语音播报
- (void)pauseSpeechText;
//停止语音播报
- (void)stopSpeechText;
//语音合成器
@property(nonatomic,strong)AVSpeechSynthesizer*speechSynthesizer;
//是否启用，默认为YES
@property(nonatomic,assign)BOOLenabled;
//语音播报的的语音，默认中文，zh-CN
@property(nonatomic,strong)AVSpeechSynthesisVoice*voice;
@end
@implementationZRRSpeechSynthesizer
- (instancetype)init
{
if(self= [superinit]) {
_enabled=YES;
_voice= [AVSpeechSynthesisVoicevoiceWithLanguage:@"zh-CN"];
_speechSynthesizer= [[AVSpeechSynthesizeralloc]init];
}
returnself;
}
+ (ZRRSpeechSynthesizer*)sharedSpeechInstance
{
__strongstaticZRRSpeechSynthesizer*instance =nil;
staticdispatch_once_tonceToken;
dispatch_once(&onceToken, ^{
instance = [[selfalloc]init];
});
returninstance;
}
- (BOOL)setSpeechLanguage:(NSString*)language
{
AVSpeechSynthesisVoice*voice = [AVSpeechSynthesisVoicevoiceWithLanguage:language];
if(voice) {
self.voice= voice;
returnYES;
}
returnNO;
}
- (void)startSpeechText:(NSString*)text
{
if(_enabled==NO)
return;
AVSpeechUtterance*utterance = [AVSpeechUtterancespeechUtteranceWithString:text];
utterance.voice=_voice;
utterance.volume=1.0;//设置音量[0-1] Default = 1
utterance.rate=0.5;//设置语速
utterance.pitchMultiplier=1;//设置语调，可能是高低音[0.5 - 2] Default = 1
[_speechSynthesizer stopSpeakingAtBoundary:AVSpeechBoundaryImmediate];
[_speechSynthesizer speakUtterance:utterance];
}
- (void)pauseSpeechText
{
if([self.speechSynthesizerisSpeaking]) {
[self.speechSynthesizerpauseSpeakingAtBoundary:AVSpeechBoundaryImmediate];
}
}
- (void)stopSpeechText
{
if([self.speechSynthesizer isSpeaking]) {
[self.speechSynthesizer stopSpeakingAtBoundary:AVSpeechBoundaryImmediate];
}
}
@end
二.调用科大讯飞的 SDK
//通过appid连接讯飞语音服务器，把@"53b5560a"换成你申请的appid
NSString*initString = [NSStringstringWithFormat:@"%@=%@", [IFlySpeechConstantAPPID],@"53b5560a"];
//所有服务启动前，需要确保执行createUtility
[IFlySpeechUtilitycreateUtility:initString];
//创建合成对象，为单例模式
_iFlySpeechSynthesizer= [IFlySpeechSynthesizersharedInstance];
_iFlySpeechSynthesizer.delegate=self;
//设置语音合成的参数
//合成的语速,取值范围0~100
[_iFlySpeechSynthesizersetParameter:@"50"forKey:[IFlySpeechConstantSPEED]];
//合成的音量;取值范围0~100
[_iFlySpeechSynthesizersetParameter:@"50"forKey:[IFlySpeechConstantVOLUME]];
//发音人,默认为”xiaoyan”;可以设置的参数列表可参考个性化发音人列表
[_iFlySpeechSynthesizersetParameter:@"vixr"forKey:[IFlySpeechConstantVOICE_NAME]];//
//音频采样率,目前支持的采样率有16000和8000
[_iFlySpeechSynthesizersetParameter:@"8000"forKey:[IFlySpeechConstantSAMPLE_RATE]];
////asr_audio_path保存录音文件路径，如不再需要，设置value为nil表示取消，默认目录是documents
[_iFlySpeechSynthesizer setParameter:@"tts.pcm"forKey:[IFlySpeechConstantTTS_AUDIO_PATH]];
/**
*语音合成回调
*/
@protocolIFlySpeechSynthesizerDelegate
@required
/**
*结束回调
*当整个合成结束之后会回调此函数
*
*@param error错误码
*/
- (void) onCompleted:(IFlySpeechError*) error;
@optional
/**
*开始合成回调
*/
- (void) onSpeakBegin;
/**
*缓冲进度回调
*
*@param progress缓冲进度，0-100
*@param msg附件信息，此版本为nil
*/
- (void) onBufferProgress:(int) progress message:(NSString*)msg;
/**
*播放进度回调
*
*@param progress播放进度，0-100
*/
- (void) onSpeakProgress:(int) progress;
/**
*暂停播放回调
*/
- (void) onSpeakPaused;
/**
*恢复播放回调
*/
- (void) onSpeakResumed;
/**
*正在取消回调
*当调用`cancel`之后会回调此函数
*/
- (void) onSpeakCancel;
/**
*扩展事件回调
*根据事件类型返回额外的数据
*
*@param eventType事件类型，具体参见IFlySpeechEventType枚举。目前只支持EVENT_TTS_BUFFER也就是实时返回合成音频。
*@param arg0arg0
*@param arg1arg1
*@param eventData事件数据
*/
- (void) onEvent:(int)eventType arg0:(int)arg0 arg1:(int)arg1 data:(NSData*)eventData;
@end