private void ResetSpectrogram()
{
int sampleRate = audioControl1.SampleRate;
int fftSize = 1 << 14;
int samplesInTenMinutes = sampleRate * 60 * 10;
int targetWidth = settings.targetWidth;
int stepSize = samplesInTenMinutes / targetWidth;
spec = new Spectrogram.Spectrogram(sampleRate, fftSize, stepSize, fixedWidth: targetWidth);
spec.SetColormap(cmaps.Where(x => x.Name == settings.colormap).First());
// reset the spectrogram based on where we are in the 10 minute block
ResetSpectrogramPosition();
// resize the image based on the spectrogram dimensions
bmpSpectrogram = new Bitmap(
width: spec.Width + verticalScaleWidth,
height: spec.Height / settings.verticalReduction,
format: PixelFormat.Format32bppPArgb);
pictureBox1.Image = bmpSpectrogram;
pictureBox1.Size = pictureBox1.Image.Size;
Width = pictureBox1.Width + 33;
UpdateVerticalScale();
Status($"Spectrogram reset");
}
private void cbColormap_SelectedIndexChanged(object sender, EventArgs e)
{
settings.colormap = cbColormap.Text;
settings.Save();
spec?.SetColormap(cmaps[cbColormap.SelectedIndex]);
}
//Sets up a listener for the selected microphone and initializes a spectrogram display
public void StartListening()
{
int sampleRate = Int32.Parse(sampleRates[cbSampleRate.SelectedIndex]);
int fftSize = 1 << (9 + cbFFTsize.SelectedIndex);
int stepSize = fftSize - (int)(fftSize * overlap);
listener?.Dispose();
listener = new Listener(cbMicInput.SelectedIndex, sampleRate);
spec = new Spectrogram.Spectrogram(sampleRate, fftSize, stepSize);
if (cmaps != null)
{
spec.SetColormap(cmaps[cbCmaps.SelectedIndex]); //todo this is a hack for this running before SpecInit
}
stft = new FFTs(spec.GetFFTs(), spec.SampleRate, spec.StepSize, spec.GetWindow());
}
private void cbCmaps_SelectionChanged(object sender, SelectionChangedEventArgs e) => spec.SetColormap(cmaps[cbCmaps.SelectedIndex]);
