我可以使用 OpenEars（或其他）收听和分析来自 Apple Watch 麦克风的语音吗？

Question

是否可以使用 OpenEars（或其他软件包）访问 Apple Watch 麦克风的语音？

我希望构建一个能够收听语音、使用手表麦克风并识别特定关键字的应用。

Answer 1

不，目前无法直接访问 Apple Watch 麦克风。我在官方开发者论坛找到了答案

WatchKit currently doesn't provide access to the watch's microphone. You do, however, have access to the iPhone's microphone from the WatchKit extension.

您可以使用此处说明的 Apple 提供的听写系统：

Answer 2

我尝试使用 AppleWatch Simulator 直接从 AppleWatch 录制音频。

但这只会从 iPhone 模拟器产生声音。您可以对真正的 AppleWatch 做同样的事情，从 iPhone 麦克风录制音频。

- (void) setupRecorder{
    [self configureAVAudioSession];

    // Set the audio file
    NSArray *pathComponents = [NSArray arrayWithObjects:
                               [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject], // NSUserDomainMask
                               @"AWAudio.wav",
                               nil];

    file = [NSURL fileURLWithPathComponents:pathComponents];

    // Setup audio session
    AVAudioSession *session = [AVAudioSession sharedInstance];
    [session setCategory:AVAudioSessionCategoryPlayAndRecord error:nil];

    // Define the recorder setting
    NSMutableDictionary *recordSetting = [[NSMutableDictionary alloc] init];

    [recordSetting setValue:[NSNumber numberWithInt:kAudioFormatLinearPCM] forKey:AVFormatIDKey];
    [recordSetting setValue:[NSNumber numberWithFloat:16000.0] forKey:AVSampleRateKey];
    [recordSetting setValue:[NSNumber numberWithInt: 1] forKey:AVNumberOfChannelsKey];
    [recordSetting setValue:[NSNumber numberWithBool:0] forKey:AVLinearPCMIsBigEndianKey];
    [recordSetting setValue:[NSNumber numberWithInt:16] forKey:AVLinearPCMBitDepthKey];

    // Initiate and prepare the recorder
    recorder = [[AVAudioRecorder alloc] initWithURL:file settings:recordSetting error:NULL];
    recorder.delegate = self;
    recorder.meteringEnabled = YES;

    [recorder prepareToRecord];
}

记录方式示例：

if (player.playing) {
        NSLog(@"player playing");
        [player stop];
    }

    if (!recorder.recording) {
        NSLog(@"recorder no recording");
        AVAudioSession *session = [AVAudioSession sharedInstance];
        [session setActive:YES error:nil];

        // Start recording
        [recorder record];
        [self startAnimation];
        [self performSelector:@selector(finishRecordingAfterTwelveSeconds) withObject:nil afterDelay:12.0];
    } else {

        // Pause recording
        AVAudioSession *audioSession = [AVAudioSession sharedInstance];
        [audioSession setActive:NO error:nil];
        [self stopAnimation];
        [self setupFinishRecording];
    }

Answer 3

从 WatchOS 2.1 和 iOS9 开始，我已经能够通过两种不同的方式实现您的建议：

选项 1 - 录制 WAV 文件并上传到 ASR 服务器 我录制并保存了一个 WAV 文件到 Apple Watch。之后，我将文件上传到付费语音识别提供商，一切正常！这是要记录的代码，将 UI 更新代码行（和调试代码行）替换为您自己的代码：

//RECORD AUDIO SAMPLE
    var saveUrl: NSURL? //this var is initialized in the awakeWithContext method//
    func recordAudio(){
        let duration = NSTimeInterval(5)
        let recordOptions =
        [WKAudioRecorderControllerOptionsMaximumDurationKey : duration]
       // print("Recording to: "+(saveUrl?.description)!)
        //CONSTRUCT AUDIO FILE URL
        let fileManager = NSFileManager.defaultManager()
        let container = fileManager.containerURLForSecurityApplicationGroupIdentifier("group.artivoice.applewatch");
        let fileName = "audio.wav"
        saveUrl = container?.URLByAppendingPathComponent(fileName)
        presentAudioRecorderControllerWithOutputURL(saveUrl!,
            preset: .WideBandSpeech,
            options: recordOptions,
            completion: { saved, error in
                if let err = error {
                    print(err.description)
                    self.sendMessageToPhone("Recording error: "+err.description)
                }
                if saved {
                    self.btnPlay.setEnabled(true)
                    self.sendMessageToPhone("Audio was saved successfully.")
                    print("Audio Saved")
                    self.uploadAudioSample()
                }
        })
    }

选项 2 - 使用 iWATCH 的母语语音识别 在这种方法中，我采用了原始的本地语音菜单，但是......！我没有添加任何按钮选项，只是纯 ASR。我启动了空的语音菜单，然后恢复了 ASR 返回的字符串。这是代码，享受：

func launchIWatchVoiceRecognition(){
     //you can see the empty array [], add options if it suits you well
        self.presentTextInputControllerWithSuggestions([], allowedInputMode: WKTextInputMode.Plain, completion:{(results) -> Void in
            let aResult = results?[0] as? String
            if(!(aResult == nil)){
                print(aResult) //print result
                self.sendMessageToPhone("Native ASR says:  "+aResult!)
                dispatch_async(dispatch_get_main_queue()) {
                    self.txtWatch.setText(aResult) //show result on UI
                }
            }//end if
        })//end show voice menu
    }

选项 2 快如闪电，但如果您想执行一些高级语音侦察功能（自定义词汇、语法...），选项 1 会更方便。我会向大多数用户推荐选项 1。 瞧！如果您需要额外的提示，请告诉我！