ios 原生语音识别,百度翻译API使用,原生文字转语音播报

若有不正之处,希望大家不吝赐教,谢谢!

原生语音识别所需:
首先需要再plist文件中加入:
Privacy - Speech Recognition Usage Description
需要使用siri来进行语音识别

Privacy - Microphone Usage Description
同意后,您可以使用语音翻译的相关功能

百度翻译API所需,百度文档地址http://api.fanyi.baidu.com/api/trans/product/apidoc,官方文档提供:
Privacy - Camera Usage Description
访问相机

Privacy - Photo Library Usage Description
访问相册

原声语音识别

获取语音识别的权限,主要代码如下:

[SFSpeechRecognizer requestAuthorization:^(SFSpeechRecognizerAuthorizationStatus status) {switch (status) {case SFSpeechRecognizerAuthorizationStatusAuthorized:NSLog(@"可以语音识别");break;case SFSpeechRecognizerAuthorizationStatusDenied:NSLog(@"用户被拒绝访问语音识别");if(self.errorHandler){self.errorHandler(self, TSSpeechHelperErrorTypeUserRefuse);}break;case SFSpeechRecognizerAuthorizationStatusRestricted:NSLog(@"不能在该设备上进行语音识别");if(self.errorHandler){self.errorHandler(self, TSSpeechHelperErrorTypeNoNotPossible);}break;case SFSpeechRecognizerAuthorizationStatusNotDetermined:NSLog(@"没有授权语音识别");if(self.errorHandler){self.errorHandler(self, TSSpeechHelperErrorTypeNoPermission);}break;default:break;}}];

使用SFSpeechRecognizer :Speech Kit 框架来进行语音识别支持ios10 16年苹果推出

- (SFSpeechRecognizer *)speechRecognizer{if (_speechRecognizer == nil){// NSLocale 类返回本地化信息，主要体现在"语言"和"区域格式"这两个设置项NSLocale *cale = [[NSLocale alloc]initWithLocaleIdentifier:self.languageString];//英语就是 en_US_speechRecognizer = [[SFSpeechRecognizer alloc]initWithLocale:cale];_speechRecognizer.delegate = self;}return _speechRecognizer;
}

开始录音并识别

//开始录音
-(void)startRecording{if (self.recognitionTask) {[self.recognitionTask cancel];self.recognitionTask = nil;}NSError *error = nil;AVAudioSession *audioSession = [AVAudioSession sharedInstance];[audioSession setCategory:AVAudioSessionCategoryRecord error:&error];
[audioSession setMode:AVAudioSessionModeMeasurement error:&error];
[audioSession setActive:true withOptions:AVAudioSessionSetActiveOptionNotifyOthersOnDeactivation error:&error];if (error == nil) {//可以使用}else{//提示设备不支持的错误// TSSpeechHelperErrorTypeNoNotPossiblereturn;}self.recognitionRequest = [[SFSpeechAudioBufferRecognitionRequest alloc]init];AVAudioInputNode *inputNode = self.audioEngine.inputNode;self.recognitionRequest.shouldReportPartialResults = true;//开始识别任务self.recognitionTask = [self.speechRecognizer recognitionTaskWithRequest:self.recognitionRequest resultHandler:^(SFSpeechRecognitionResult * _Nullable result, NSError * _Nullable error) {bool isFinal = false;if (result) {NSString * bestString = [[result bestTranscription] formattedString];isFinal = [result isFinal];NSLog(@"进行了一次语音识别,内容是: %@",bestString);}if (error || isFinal) {[self stopRecording];}}];AVAudioFormat *recordingFormat = [inputNode outputFormatForBus:0];[inputNode installTapOnBus:0 bufferSize:1024 format:recordingFormat block:^(AVAudioPCMBuffer * _Nonnull buffer, AVAudioTime * _Nonnull when) {[self.recognitionRequest appendAudioPCMBuffer:buffer];}];[self.audioEngine prepare];if (![self.audioEngine startAndReturnError:nil]) {//打开录音失败 TSSpeechHelperErrorTypeAudioStartError}
}//停止录音
- (void)stopRecording{[_audioEngine stop];[self.recognitionRequest endAudio];[_audioEngine.inputNode removeTapOnBus:0];_speechRecognizer = nil;
}

百度翻译api使用

使用百度翻译API提供的接口进行文字翻译

//翻译语言
- (void)initbdapiParameterDataWithModel:(NSString *)translationFromString  success:(void (^)(NSString * translationString))successfailure:(void (^)(NSError * error))failure  {//将APPID q salt key 拼接一起NSString *appendStr = [NSString stringWithFormat:@"%@%@%@%@",AppIdKey,model.translationFromString,SaltKey,SecretKey];//加密 生成签名  此处有坑:  这里不需要讲文字进行utf-8编码NSString *md5Str = [self md5:appendStr];//将待翻译的文字进行urf-8转码NSString *qEncoding = [translationFromString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];//拼接请求url字符串NSString * bdTranslationurlString = [NSString stringWithFormat:@"http://api.fanyi.baidu.com/api/trans/vip/translate?q=%@&from=%@&to=%@&appid=%@&salt=%@&sign=%@",qEncoding,model.translationfromCodeString,model.translationToCodeString,AppIdKey,SaltKey,md5Str];//创建网络请求AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];__weak typeof(model)weakModel = model;//发起网络请求[manager GET:bdTranslationurlString parameters:nil progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {__strong typeof(model)strongModel = weakModel;// 判断是否翻译成功if (responseObject == nil) {success(@"翻译失败,请稍后再试!");translationToString = @"";return ;}//获取翻译后的字符串 eg: {"from":"en","to":"zh","trans_result":[{"src":"apple","dst":"\u82f9\u679c"}]}NSString *resStr = [[responseObject objectForKey:@"trans_result"] firstObject][@"dst"];success(resStr);} failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {//翻译失败 返回失败blockfailure(error);}];}

文字转语音播报

 ```   NSString *string = @"你好"NSString *yzString = @"zh-CN";AVSpeechSynthesizer *player  = [[AVSpeechSynthesizer alloc]init];AVSpeechUtterance *speechUtterance = [[AVSpeechUtterance alloc]initWithString:string];//设置语音内容speechUtterance.voice  = [AVSpeechSynthesisVoice voiceWithLanguage:yzString];//设置语言speechUtterance.rate   = 0.5;  //设置语速speechUtterance.volume = 1.0;  //设置音量（0.0~1.0）默认为1.0speechUtterance.pitchMultiplier    =  0.5;  //设置语调 (0.5-2.0)speechUtterance.postUtteranceDelay = 1; //目的是让语音合成器播放下一语句前有短暂的暂停[player speakUtterance:speechUtterance];

备注:主要播报文字代码如下,需要注意的是如果来语音识别后立刻想要播报,需要在播报之前开启Seeeion

AVAudioSession *audioSession = [AVAudioSession sharedInstance]; [audioSession setCategory:AVAudioSessionCategoryPlayback error:nil]; [audioSession setMode:AVAudioSessionModeMeasurement error:nil]; [audioSession setActive:true withOptions:AVAudioSessionSetActiveOptionNotifyOthersOnDeactivation error:nil]; [audioSession setCategory:AVAudioSessionCategoryAmbient