public FormMicrophone()
{
InitializeComponent();
if (NAudio.Wave.WaveIn.DeviceCount == 0)
{
MessageBox.Show("No audio input devices found.\n\nThis program will now exit.",
"ERROR", MessageBoxButtons.OK, MessageBoxIcon.Error);
Close();
}
else
{
cbDevice.Items.Clear();
for (int i = 0; i < NAudio.Wave.WaveIn.DeviceCount; i++)
{
cbDevice.Items.Add(NAudio.Wave.WaveIn.GetCapabilities(i).ProductName);
}
cbDevice.SelectedIndex = 0;
}
for (int i = 9; i < 16; i++)
{
cbFftSize.Items.Add($"2^{i} ({1 << i:N0})");
}
cbFftSize.SelectedIndex = 1;
cmaps = Colormap.GetColormaps();
foreach (Colormap cmap in cmaps)
{
cbColormap.Items.Add(cmap.Name);
}
cbColormap.SelectedIndex = cbColormap.Items.IndexOf("Viridis");
}
public MainViewModel()
{
//Setup the audio input
if (NAudio.Wave.WaveIn.DeviceCount == 0)
{
//TODO: set NoDevice app state
}
else
{
DeviceCapabilities = new List <WaveInCapabilities>();
for (int i = 0; i < NAudio.Wave.WaveIn.DeviceCount; i++)
{
DeviceCapabilities.Add(NAudio.Wave.WaveIn.GetCapabilities(i));
}
SelectedDevice = DeviceCapabilities[0];
}
//Setup FFT size
FftSizes = new List <int>()
{
512, 1024, 2048, 4096, 8192, 16384, 32768
};
SelectedFftSize = FftSizes[1];
ColorMaps = Colormap.GetColormaps().ToList();
SelectedColorMap = ColorMaps.Where(c => c.Name == "Viridis").FirstOrDefault();
Brightness = 5;
timer = new DispatcherTimer();
timer.Interval = TimeSpan.FromMilliseconds(100);
timer.IsEnabled = true;
timer.Tick += Timer_Tick;
timer.Start();
}
private void SpecInit()
{
foreach (string sr in sampleRates)
{
cbSampleRate.Items.Add(sr);
}
cbSampleRate.SelectedIndex = 2;
//Init mic inputs into the combo box
if (NAudio.Wave.WaveIn.DeviceCount == 0)
{
MessageBox.Show("No audio input devices found.\n\nThis program will now exit.",
"ERROR", MessageBoxButton.OK);
Close();
}
else
{
cbMicInput.Items.Clear();
for (int i = 0; i < NAudio.Wave.WaveIn.DeviceCount; i++)
{
cbMicInput.Items.Add(NAudio.Wave.WaveIn.GetCapabilities(i).ProductName);
}
cbMicInput.SelectedIndex = 0;
}
//Init fft settings
for (int i = 9; i < 14; i++)
{
cbFFTsize.Items.Add($"({1 << i:N0})");
}
cbFFTsize.SelectedIndex = 1;
//Init fft settings
for (int i = 0; i < 10; i++)
{
cbOverlap.Items.Add($"{i}/{(i+1)}");
}
cbOverlap.SelectedIndex = 1;
//Init colormaps
cmaps = Colormap.GetColormaps();
foreach (Colormap cmap in cmaps)
{
cbCmaps.Items.Add(cmap.Name);
}
cbCmaps.SelectedIndex = cbCmaps.Items.IndexOf("Magma");
//Timer used to continously update the spectrogram with new data
specTimer = new DispatcherTimer();
specTimer.Interval = TimeSpan.FromMilliseconds(5);
specTimer.Tick += new EventHandler(SpecTimer_tick);
specTimer.Start();
scrollViewerSpec.ScrollToBottom();
scrollViewerSpec.ScrollToRightEnd();
}
public void Test_Make_CommonColormaps()
{
(double[] audio, int sampleRate) = AudioFile.ReadWAV("../../../../../data/cant-do-that-44100.wav");
int fftSize = 1 << 12;
var spec = new SpectrogramGenerator(sampleRate, fftSize, stepSize: 700, maxFreq: 2000);
spec.SetWindow(FftSharp.Window.Hanning(fftSize / 3)); // sharper window than typical
spec.Add(audio);
// delete old colormap files
foreach (var filePath in System.IO.Directory.GetFiles("../../../../../dev/graphics/", "hal-*.png"))
{
System.IO.File.Delete(filePath);
}
foreach (var cmap in Colormap.GetColormaps())
{
spec.SetColormap(cmap);
spec.SaveImage($"../../../../../dev/graphics/hal-{cmap.Name}.png");
Debug.WriteLine($"");
}
}
