接入讯飞SDK及参数设置

简要描述

主要协助云上越秀App接入讯飞SDK，并且设置讯飞相应参数的功能代码示例；

主要内容

讯飞SDK是以framework框架的方式提供SDK的接入。

SDK的版本：1.180版本。

包大小：19.2M。

引入方式：将framework文件夹拖入工程即可。

讯飞SDK初始化代码示例：

  1. + (void)configIFly {
  2.     //Set log level
  3.     [IFlySetting setLogFile:LVL_ALL];
  5.     //Set whether to output log messages in Xcode console
  6.     [IFlySetting showLogcat:YES];
  8.     //Set the local storage path of SDK
  9.     NSArray *paths = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);
  10.     NSString *cachePath = [paths objectAtIndex:0];
  11.     [IFlySetting setLogFilePath:cachePath];
  13.     PHAIConfig *config = PHAIConfig.sharedConfig;
  15.     if ([PHAIUtils isNilOrEmpty:config.appId]) {
  16.         IFlyLog(@"App ID 为空，初始化讯飞SDK失败");
  17.     }
  19.     //Set APPID
  20.     NSString *initString = [[NSString alloc] initWithFormat:@"appid=%@",config.appId];
  22.     //Configure and initialize iflytek services.(This interface must been invoked in application:didFinishLaunchingWithOptions:)
  23.     [IFlySpeechUtility createUtility:initString];
  24. }

1. 10s内无声音自动中断

讯飞的SDK文档里面已经说明此类情况：文档地址

在听写过程中如果10秒未说话录制会自动停止。
答：听写vad_eos为支持的最长静音时间，超过这个时间会认为音频结束自动断开。

代码上主要通过配置[_iFlySpeechRecognizer setParameter:instance.vadEos forKey:[IFlySpeechConstant VAD_EOS]];和[_iFlySpeechRecognizer setParameter:instance.vadBos forKey:[IFlySpeechConstant VAD_BOS]];来实现10s内无声音自动中断。
示例代码：

  2. -(void)defaultSetting {
  3.     _speechTimeout = @"60000";
  4.     _vadEos = @"10000";
  5.     _vadBos = @"10000";
  6.     _dot = @"1";
  7.     _sampleRate = @"16000";
  8.     _language = CHINESE;
  9.     _accent = PUTONGHUA;
  10.     _haveView = NO;
  11.     _accentNickName = [[NSArray alloc] initWithObjects:NSLocalizedString(@"K_LangCant", nil), NSLocalizedString(@"K_LangChin", nil), NSLocalizedString(@"K_LangEng", nil), NSLocalizedString(@"K_LangSzec", nil),NSLocalizedString(@"K_LangJapa", nil),NSLocalizedString(@"K_LangRuss", nil),NSLocalizedString(@"K_LangFren", nil),NSLocalizedString(@"K_LangSpan", nil),NSLocalizedString(@"K_LangKor", nil), nil];
  13.     _isTranslate = NO;
  14. }
  16. - (IFlySpeechRecognizer *)iFlySpeechRecognizer {
  17.     if (_iFlySpeechRecognizer == nil) {
  18.         _iFlySpeechRecognizer = IFlySpeechRecognizer.sharedInstance;
  19.         _iFlySpeechRecognizer.delegate = self;
  21.         //设置识别参数
  22.         //设置为听写模式
  23.         [_iFlySpeechRecognizer setParameter: @"iat" forKey: [IFlySpeechConstant IFLY_DOMAIN]];
  24.         //Set result type
  25.         [_iFlySpeechRecognizer setParameter:@"json" forKey:[IFlySpeechConstant RESULT_TYPE]];
  26.         //Set microphone as audio source
  27.         //    [_iFlySpeechRecognizer setParameter:IFLY_AUDIO_SOURCE_MIC forKey:@"audio_source"];
  30.         PHAIIATConfig *instance = [PHAIIATConfig sharedInstance];
  32.         //set timeout of recording
  33.         [_iFlySpeechRecognizer setParameter:instance.speechTimeout forKey:[IFlySpeechConstant SPEECH_TIMEOUT]];
  34.         //set VAD timeout of end of speech(EOS)
  35.         [_iFlySpeechRecognizer setParameter:instance.vadEos forKey:[IFlySpeechConstant VAD_EOS]];
  36.         //set VAD timeout of beginning of speech(BOS)
  37.         [_iFlySpeechRecognizer setParameter:instance.vadBos forKey:[IFlySpeechConstant VAD_BOS]];
  38.         //set network timeout
  39.         [_iFlySpeechRecognizer setParameter:@"20000" forKey:[IFlySpeechConstant NET_TIMEOUT]];
  41.         //set sample rate, 16K as a recommended option
  42.         [_iFlySpeechRecognizer setParameter:instance.sampleRate forKey:[IFlySpeechConstant SAMPLE_RATE]];
  44.         //set language
  45.         [_iFlySpeechRecognizer setParameter:instance.language forKey:[IFlySpeechConstant LANGUAGE]];
  46.         //set accent
  47.         [_iFlySpeechRecognizer setParameter:instance.accent forKey:[IFlySpeechConstant ACCENT]];
  49.         //set whether or not to show punctuation in recognition results
  50.         [_iFlySpeechRecognizer setParameter:instance.dot forKey:[IFlySpeechConstant ASR_PTT]];
  51.     }
  53.     return _iFlySpeechRecognizer;
  54. }

2.监听讯飞录音状态

实现代理<IFlySpeechRecognizerDelegate>。

  1. #pragma mark - IFlySpeechRecognizerDelegate
  3. /**
  4.  volume callback,range from 0 to 30.
  5.  **/
  6. - (void)onVolumeChanged: (int)volume {
  8. }
  10. /**
  11.  Beginning Of Speech
  12.  **/
  13. - (void)onBeginOfSpeech {
  14.     IFlyLog(@"onBeginOfSpeech");
  16. }
  18. /**
  19.  End Of Speech
  20.  **/
  21. - (void)onEndOfSpeech {
  22.     IFlyLog(@"onEndOfSpeech");
  23. }
  25. /**
  26.  recognition session completion, which will be invoked no matter whether it exits error.
  27.  error.errorCode =
  28.  0     success
  29.  other fail
  30.  **/
  31. - (void)onCompleted:(IFlySpeechError *)error {
  32.     IFlyLog(@"%s",__func__);
  34.     self.result = nil;
  36.     if (error.errorCode != 0) {
  37.         IFlyLog(@"语音识别出现问题：%@", error.errorDesc);
  38.     } else {
  39.         PHAIFileManager *fileManager = PHAIFileManager.sharedManager;
  40.         NSString *fileName = self.fileName;
  41.         NSString *pcmFilePath = [fileManager getCachesPCMURLWithName:fileName].path;
  42.         NSString *mp3FilePath = [fileManager getIATAudioFileWithName:fileName].path;
  43.         int sampleRate = [PHAIIATConfig.sharedInstance.sampleRate intValue];
  44.         __weak typeof(self) weakSelf = self;
  45.         [PHAIMP3Encoder conventToMp3WithCafFilePath:pcmFilePath
  46.                                         mp3FilePath:mp3FilePath
  47.                                          sampleRate:sampleRate
  48.                                            callback:^(BOOL complete) {
  49.             if (weakSelf.delegate && [weakSelf.delegate respondsToSelector:@selector(mp3EnconderComplete:fileName:)]) {
  50.                 [weakSelf.delegate mp3EnconderComplete:complete fileName:fileName];
  51.             }
  52.             AudioEncoderLog(@"转码完成");
  53.         }];
  54.     }
  56.     if (self.delegate && [self.delegate respondsToSelector:@selector(recongnizingComplete:)]) {
  57.         [self.delegate recongnizingComplete:error.errorCode == 0];
  58.     }
  59. }
  61. /**
  62.  result callback of recognition without view
  63.  results：recognition results
  64.  isLast：whether or not this is the last result
  65.  **/
  66. - (void)onResults:(NSArray *)results isLast:(BOOL)isLast {
  67.     IFlyLog(@"%@",results);
  69.     NSMutableString *resultString = [[NSMutableString alloc] init];
  70.     NSDictionary *dic = results[0];
  72.     for (NSString *key in dic) {
  73.         [resultString appendFormat:@"%@",key];
  74.     }
  76.     if (self.result == nil) {
  77.         self.result = @"";
  78.     }
  80.     NSString *result = [NSString stringWithFormat:@"%@%@", self.result, resultString];
  82.     NSString * resultFromJson =  nil;
  84.     if([PHAIIATConfig sharedInstance].isTranslate) {
  86.         NSDictionary *resultDic  = [NSJSONSerialization JSONObjectWithData:    //The result type must be utf8, otherwise an unknown error will happen.
  87.                                     [resultString dataUsingEncoding:NSUTF8StringEncoding] options:kNilOptions error:nil];
  88.         if(resultDic != nil){
  89.             NSDictionary *trans_result = [resultDic objectForKey:@"trans_result"];
  91.             if([[PHAIIATConfig sharedInstance].language isEqualToString:@"en_us"]){
  92.                 NSString *dst = [trans_result objectForKey:@"dst"];
  93.                 IFlyLog(@"dst=%@",dst);
  94.                 resultFromJson = [NSString stringWithFormat:@"%@\ndst:%@",resultString,dst];
  95.             }
  96.             else{
  97.                 NSString *src = [trans_result objectForKey:@"src"];
  98.                 IFlyLog(@"src=%@",src);
  99.                 resultFromJson = [NSString stringWithFormat:@"%@\nsrc:%@",resultString,src];
  100.             }
  101.         }
  102.     }
  103.     else{
  104.         resultFromJson = [PHAIISRDataHelper stringFromJson:resultString];
  105.     }
  107.     self.result = [NSString stringWithFormat:@"%@%@",self.result, resultFromJson];
  109. //    NSData *jsonData = [resultString dataUsingEncoding:NSUTF8StringEncoding];
  110. //    NSDictionary *json = [NSJSONSerialization JSONObjectWithData:jsonData options:NSJSONReadingMutableLeaves error:nil];
  111. //    if (json) {
  112. //        [self.jsons addObject:json];
  113. //    }
  115.     if (resultString) {
  116.         [self.jsons addObject:resultString];
  117.     }
  120.     if (isLast){
  121.         IFlyLog(@"ISR Results(json)：%@", result);
  122.     }
  124.     IFlyLog(@"result=%@", result);
  125.     IFlyLog(@"resultFromJson=%@",resultFromJson);
  126.     IFlyLog(@"isLast=%d,_textView.text=%@",isLast, self.result);
  128.     if (self.delegate && [self.delegate respondsToSelector:@selector(recognizingResult:)]) {
  129.         [self.delegate recognizingResult:self.result];
  130.     }
  131. }
  133. /**
  134.  callback of canceling recognition
  135.  **/
  136. - (void)onCancel {
  137.     self.result = nil;
  138.     IFlyLog(@"Recognition is cancelled");
  139. }
  141. #pragma mark - Getter
  143. - (NSData *)data {
  144.     if (self.jsons.count > 0) {
  145.         NSError *error;
  146.         NSData *data = [NSJSONSerialization dataWithJSONObject:self.jsons options:NSJSONWritingPrettyPrinted error:&error];
  147.         if (error) {
  148.             IFlyLog(@"讯飞语音识别json生成失败: %@", error);
  149.             return nil;
  150.         } else {
  151.             return data;
  152.         }
  153.     } else {
  154.         return nil;
  155.     }
  157. }
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