C# Wave.WaveIn类代码示例

 //Кнопка "Запись"
 private void button_rec_Click(object sender, EventArgs e)
 {
     button_stop.Enabled = true;
     timer.Start();
     ind = 1;
     try
     {
         waveIn = new WaveIn();
         waveIn.DeviceNumber = 0;//Дефолтное устройство для записи (если оно имеется)
         waveIn.DataAvailable += waveIn_DataAvailable;//Прикрепляем к событию DataAvailable обработчик, возникающий при наличии записываемых данных
         waveIn.RecordingStopped += waveIn_RecordingStopped;//Прикрепляем обработчик завершения записи
         waveIn.WaveFormat = new WaveFormat(8000, 1);//Формат wav-файла - принимает параметры - частоту дискретизации и количество каналов(здесь mono)
         writer = new WaveFileWriter(outputFilename, waveIn.WaveFormat);//Инициализируем объект WaveFileWriter
         waveIn.StartRecording();//Начало записи
         button_play.Enabled = false;
         button_rec.Enabled = false;
         numeric.Enabled = false;
     }
     catch (Exception ex)
     {
         button_play.Enabled = true;
         button_rec.Enabled = true;
         numeric.Enabled = true;
         MessageBox.Show(ex.Message);
     }
 }

        public Recorder()
        {
            int waveInDevices = WaveIn.DeviceCount;

            //for (int waveInDevice = 0; waveInDevice < waveInDevices; waveInDevice++)
            //{
            //    WaveInCapabilities deviceInfo = WaveIn.GetCapabilities(waveInDevice);
            //    comboBox1.Items.Add(string.Format("Device {0}: {1}, {2} channels", waveInDevice, deviceInfo.ProductName, deviceInfo.Channels));
            //}

            waveIn = new WaveIn();
            waveIn.DeviceNumber = 0;
            waveIn.DataAvailable += waveIn_DataAvailable;
            waveIn.RecordingStopped += waveIn_RecordingStopped;

            int sampleRate = 16000; // 16 kHz
            int channels = 1; // mono
            int bits = 16;

            recordingFormat = new WaveFormat(sampleRate, bits, channels);
            waveIn.WaveFormat = recordingFormat;

            string path = "C:\\temp";
            if( !Directory.Exists(path) )
            {
                Directory.CreateDirectory(path);
            }

            TempWavFileName = String.Format("{0}\\{1}.wav", path, Guid.NewGuid().ToString());

            writer = new WaveFileWriter(TempWavFileName, recordingFormat);
        }

        public void Start()
        {
            if (WaveIn.DeviceCount < 1)
                throw new Exception("Insufficient input device(s)!");

            if (WaveOut.DeviceCount < 1)
                throw new Exception("Insufficient output device(s)!");

            frame_size = toxav.CodecSettings.audio_sample_rate * toxav.CodecSettings.audio_frame_duration / 1000;

            toxav.PrepareTransmission(CallIndex, false);

            WaveFormat format = new WaveFormat((int)toxav.CodecSettings.audio_sample_rate, (int)toxav.CodecSettings.audio_channels);
            wave_provider = new BufferedWaveProvider(format);
            wave_provider.DiscardOnBufferOverflow = true;

            wave_out = new WaveOut();
            //wave_out.DeviceNumber = config["device_output"];
            wave_out.Init(wave_provider);

            wave_source = new WaveIn();
            //wave_source.DeviceNumber = config["device_input"];
            wave_source.WaveFormat = format;
            wave_source.DataAvailable += wave_source_DataAvailable;
            wave_source.RecordingStopped += wave_source_RecordingStopped;
            wave_source.BufferMilliseconds = (int)toxav.CodecSettings.audio_frame_duration;
            wave_source.StartRecording();

            wave_out.Play();
        }

        private void Connect(IPEndPoint endPoint, int inputDeviceNumber, INetworkChatCodec codec)
        {
            waveIn = new WaveIn();
            waveIn.BufferMilliseconds = 50;
            waveIn.DeviceNumber = inputDeviceNumber;
            waveIn.WaveFormat = codec.RecordFormat;
            waveIn.DataAvailable += waveIn_DataAvailable;
            waveIn.StartRecording();

            udpSender = new UdpClient();
            udpListener = new UdpClient();

            // To allow us to talk to ourselves for test purposes:
            // http://stackoverflow.com/questions/687868/sending-and-receiving-udp-packets-between-two-programs-on-the-same-computer
            udpListener.Client.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);
            udpListener.Client.Bind(endPoint);

            udpSender.Connect(endPoint);

            waveOut = new WaveOut();
            waveProvider = new BufferedWaveProvider(codec.RecordFormat);
            waveOut.Init(waveProvider);
            waveOut.Play();

            connected = true;
            var state = new ListenerThreadState { Codec = codec, EndPoint = endPoint };
            ThreadPool.QueueUserWorkItem(ListenerThread, state);
        }

        // this gets called when the panel is loaded into the form
        private void ilPanel1_Load(object sender, EventArgs e) {
            m_shutdown = false; 
            // setup the scene
            ilPanel1.Scene.Add(new ILPlotCube(twoDMode: false) {
                Children = {
                // create two line plots: the first is used to display the data itself ... 
                    new ILLinePlot(0, DefaultLinePlotTag, Color.Magenta, lineWidth: 1),
                    // .. the second is used for marking magnitude peaks, it gets the line hidden
                    new ILLinePlot(0, DefaultMarkerPlotTag, markerStyle:MarkerStyle.Square) { Line = { Visible = false }}
                },
                // we want both axes in logarithmic scale
                ScaleModes = { XAxisScale = AxisScale.Logarithmic, YAxisScale = AxisScale.Logarithmic },
                // configure axis labels
                Axes = { XAxis = { Label = { Text = "Frequency [1/\\omega]" }, LabelPosition = new Vector3(1, 1, 0) },
                         YAxis = { Label = { Text = "Magnitude [dB]" }, LabelPosition = new Vector3(1, 1, 0), LabelAnchor = new PointF(1,0) }
                }
            }); 

            // setup audio stream (this is not related to ILNumerics but to the NAudio helper lib)
            m_waveInStream = new WaveIn();
            m_waveInStream.WaveFormat = new WaveFormat(m_sampFreq, m_bitRate, 1); // 1: mono
            m_waveInStream.DeviceNumber = 0;
            m_waveInStream.BufferMilliseconds = (int)(m_fftlen / (float)m_sampFreq * 1010);  // roughly one buffersize
            m_waveInStream.DataAvailable += new EventHandler<WaveInEventArgs>(waveInStream_DataAvailable);
            try {
                m_waveInStream.StartRecording();
            } catch (NAudio.MmException exc) {
                // when no device exists or no microphone is plugged in, an exception will be thrown here
                MessageBox.Show("Error initializing audio device. Make sure that a default recording device is available!" + Environment.NewLine + "Error details:" + exc.Message); 
            }
        }

        // NAudio.Wave.WaveStream stream = null;
        private void button2_Click(object sender, EventArgs e)
        {
            if (listView1.SelectedItems.Count == 0) return;

            int deviceNumber = listView1.SelectedItems[0].Index;

            //waveOut = new NAudio.Wave.WaveOut(); ;
            sourceStream = new NAudio.Wave.WaveIn();
            sourceStream.DeviceNumber = deviceNumber;
            sourceStream.WaveFormat = new NAudio.Wave.WaveFormat(48000, NAudio.Wave.WaveIn.GetCapabilities(deviceNumber).Channels);

            sourceStream.DataAvailable += new EventHandler<WaveInEventArgs>(sourceStream_DataAvailable);
            //waveWriter = new NAudio.Wave.WaveFileWriter(save.FileName, sourceStream.WaveFormat);

            sourceStream.BufferMilliseconds = 100;
            //wavebuffer = new NAudio.Wave.WaveBuffer();
            //bwp = new NAudio.Wave.BufferedWaveProvider(sourceStream.WaveFormat);
               // bwp.DiscardOnBufferOverflow = true;

            NAudio.Wave.WaveInProvider waveIn = new NAudio.Wave.WaveInProvider(sourceStream);
            waveOut = new NAudio.Wave.DirectSoundOut();
            waveOut.Init(waveIn);

            sourceStream.StartRecording();
            //waveOut.Init(bwp);
            waveOut.Play();
               // sourceStream.StopRecording();
               // Start(sender,e);
            timer1.Enabled=true;

            ++count;
        }

        public SequenceRecorder(Conductor cond, KeyboardConfiguration key)
        {
            conductor = cond;
            keyboard = key;

            InitializeComponent();

            int waveInDevices = NAudio.Wave.WaveIn.DeviceCount;
            for (int waveInDevice = 0; waveInDevice < waveInDevices; waveInDevice++)
            {
                NAudio.Wave.WaveInCapabilities deviceInfo = NAudio.Wave.WaveIn.GetCapabilities(waveInDevice);
                microphoneList.Items.Add(waveInDevice+": "+deviceInfo.ProductName);
            }

            microphoneList.SelectedIndex = 0;
            sensitivity.SelectedIndex = 0;

            sourceStream = new NAudio.Wave.WaveIn();
            sourceStream.DeviceNumber = 0;
            sourceStream.WaveFormat = conductor.GetWaveFormat();// new NAudio.Wave.WaveFormat(44100, NAudio.Wave.WaveIn.GetCapabilities(0).Channels);
            bytesPerChannel = (sourceStream.WaveFormat.BitsPerSample / 8);
            bytesPerSample = bytesPerChannel * sourceStream.WaveFormat.Channels;

            sourceStream.DataAvailable += new EventHandler<NAudio.Wave.WaveInEventArgs>(sourceStream_DataAvailable);

            sourceStream.StartRecording();
        }

        public static void RecordSound(string name)
        {
            int waveDeviceCount = WaveIn.DeviceCount;
            //detect presence of recording hardware
            if (waveDeviceCount > 0)
            {
                inputDevice = 0;
            }
            else
            {
                MessageBox.Show("No recording hardware detected", "iMasomoAdmin", MessageBoxButton.OK, MessageBoxImage.Error);
                return;
            }

            wordName = name;
            try
            {
                
                waveIn = new WaveIn();
                waveIn.DeviceNumber = inputDevice;
                waveIn.WaveFormat = new NAudio.Wave.WaveFormat(44100, WaveIn.GetCapabilities(inputDevice).Channels);

                //in the presence of incoming data, write the data to a buffer
                waveIn.DataAvailable += waveIn_DataAvailable;
                waveWriter = new WaveFileWriter(Environment.CurrentDirectory + @"\Media\" + wordName + ".wav", waveIn.WaveFormat);
                waveIn.StartRecording();
                
            }
            catch(Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
            
        }

        void StartEncoding()
        {
            _startTime = DateTime.Now;
            _bytesSent = 0;
            _segmentFrames = 960;
            _encoder = new OpusEncoder(48000, 1, OpusNet.OpusApplication.Voip);
            _encoder.Bitrate = 8192;
            _decoder = new OpusDecoder(48000, 1);
            _bytesPerSegment = _encoder.FrameByteCount(_segmentFrames);

            _waveIn = new WaveIn(WaveCallbackInfo.FunctionCallback());
            _waveIn.BufferMilliseconds = 50;
            _waveIn.DeviceNumber = comboBox1.SelectedIndex;
            _waveIn.DataAvailable += _waveIn_DataAvailable;
            _waveIn.WaveFormat = new WaveFormat(48000, 16, 1);

            _playBuffer = new BufferedWaveProvider(new WaveFormat(48000, 16, 1));

            _waveOut = new WaveOut(WaveCallbackInfo.FunctionCallback());
            _waveOut.DeviceNumber = comboBox2.SelectedIndex;
            _waveOut.Init(_playBuffer);

            _waveOut.Play();
            _waveIn.StartRecording();

            if (_timer == null)
            {
                _timer = new Timer();
                _timer.Interval = 1000;
                _timer.Tick += _timer_Tick;
            }
            _timer.Start();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            byte[] apk, ask, bpk, bsk;
            NaClClient.CreateKeys(out apk, out ask);
            NaClClient.CreateKeys(out bpk, out bsk);

            var hasher = System.Security.Cryptography.SHA256.Create();

            _clientA = NaClClient.Create(apk, ask, bpk);
            _clientB = NaClClient.Create(bpk, bsk, apk);

            _sw = new Stopwatch();
            _sw.Start();

            _wave = new WaveIn(this.Handle);
            _wave.WaveFormat = new WaveFormat(12000, 8, 1);
            _wave.BufferMilliseconds = 100;
            _wave.DataAvailable += _wave_DataAvailable;
            _wave.StartRecording();

            _playback = new BufferedWaveProvider(_wave.WaveFormat);

            _waveOut = new WaveOut();
            _waveOut.DesiredLatency = 100;
            _waveOut.Init(_playback);
            _waveOut.Play();
        }

 private IWaveIn CreateWaveInDevice()
 {
     IWaveIn newWaveIn;
     if (radioButtonWaveIn.Checked)
     {
         newWaveIn = new WaveIn();
         newWaveIn.WaveFormat = new WaveFormat(8000, 1);
     }
     else if (radioButtonWaveInEvent.Checked)
     {
         newWaveIn = new WaveInEvent();
         newWaveIn.WaveFormat = new WaveFormat(8000, 1);
     }
     else if (radioButtonWasapi.Checked)
     {
         // can't set WaveFormat as WASAPI doesn't support SRC
         var device = (MMDevice) comboWasapiDevices.SelectedItem;
         newWaveIn = new WasapiCapture(device);
     }
     else
     {
         // can't set WaveFormat as WASAPI doesn't support SRC
         newWaveIn = new WasapiLoopbackCapture();
     }
     newWaveIn.DataAvailable += OnDataAvailable;
     newWaveIn.RecordingStopped += OnRecordingStopped;
     return newWaveIn;
 }

 public void InitializeStream()
 {
     sourceStream = new WaveIn();
     sourceStream.BufferMilliseconds = 50;
     sourceStream.DeviceNumber = 0;
     sourceStream.WaveFormat = new WaveFormat(44100, 16, WaveIn.GetCapabilities(0).Channels);
 }

        //TODO wrap WaveIn to allow DI
        public void Initialise(WaveFormat format, WaveIn driver)
        {
            if (driver == null)
            {
                throw new ArgumentNullException("driver", "Must specify a WaveIn device instance");
            }

            if (format == null)
            {
                throw new ArgumentNullException("format", "Must specify an audio format");
            }

            this.driver = driver;

            driver.DataAvailable += device_DataAvailable;

            var caps = WaveIn.GetCapabilities(driver.DeviceNumber);

            driver.WaveFormat = format;
            device = new WaveInDeviceData
            {
                Driver = driver,
                Name = caps.ProductName,
                Channels = caps.Channels,
                Buffers = new float[caps.Channels][]
            };

            Format = WaveFormat.CreateIeeeFloatWaveFormat(format.SampleRate, device.Channels);
            formatPerLine = WaveFormat.CreateIeeeFloatWaveFormat(format.SampleRate, 1);

            mapInputs(device.Channels);
        }

 public AudioRecorder(int microphone)
 {
     waveIn = new WaveIn();
     waveIn.DeviceNumber = microphone;
     waveIn.WaveFormat = new WaveFormat(44100, 1);
     bufferedWaveProvider = new BufferedWaveProvider(waveIn.WaveFormat);
     writer = new WaveFileWriter(Settings.Default.tempSoundLocation, waveIn.WaveFormat);
 }

 public static void PrepareMic()
 {
     WaveIn waveIn = new WaveIn();
     waveIn.WaveFormat = new WaveFormat(SAMPLE_FREQ, 16, 1);
     waveIn.StartRecording();
     waveIn.StopRecording();
     waveIn.Dispose();
 }