Infarh
diff --git a/‎src/Spectrogram.MicrophoneDemo/FormQrssTest.Designer.cs‎
Lines changed: 187 additions & 0 deletions b/‎src/Spectrogram.MicrophoneDemo/FormQrssTest.Designer.cs‎
Lines changed: 187 additions & 0 deletions
diff --git a/‎src/Spectrogram.MicrophoneDemo/FormQrssTest.cs‎
Lines changed: 91 additions & 0 deletions b/‎src/Spectrogram.MicrophoneDemo/FormQrssTest.cs‎
Lines changed: 91 additions & 0 deletions
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+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Diagnostics;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace Spectrogram.MicrophoneDemo
+{
+    public partial class FormQrssTest : Form
+    {
+        public FormQrssTest()
+        {
+            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;
+            }
+        }
+
+        private void FormQrssTest_Load(object sender, EventArgs e) { }
+
+        private void cbDevice_SelectedIndexChanged(object sender, EventArgs e) => StartListening();
+
+        private Spectrogram spec;
+        private Listener listener;
+        private void StartListening()
+        {
+            int sampleRate = 6000;
+            int fftSize = 1 << 15;
+            int stepSize = fftSize / 20;
+
+            pbSpectrogram.Image?.Dispose();
+            pbSpectrogram.Image = null;
+            listener?.Dispose();
+            listener = new Listener(cbDevice.SelectedIndex, sampleRate);
+            spec = new Spectrogram(sampleRate, fftSize, stepSize);
+            pbSpectrogram.Height = spec.Height;
+
+            pbScaleVert.Image?.Dispose();
+            pbScaleVert.Image = spec.GetVerticalScale(pbScaleVert.Width);
+            pbScaleVert.Height = spec.Height;
+
+            timer1.Enabled = true;
+        }
+
+        private void timer1_Tick(object sender, EventArgs e)
+        {
+            double[] newAudio = listener.GetNewAudio();
+            spec.Add(newAudio);
+
+            if (spec.FftsToProcess > 0)
+            {
+                Stopwatch sw = Stopwatch.StartNew();
+                spec.Process();
+                spec.MakeWidth(pbSpectrogram.Width);
+
+                Bitmap bmpSpec = new Bitmap(spec.Width, spec.Height, System.Drawing.Imaging.PixelFormat.Format32bppPArgb);
+                using (var bmpSpecIndexed = spec.GetBitmap((double)nudBrightness.Value, false, true))
+                using (var gfx = Graphics.FromImage(bmpSpec))
+                using (var pen = new Pen(Color.White))
+                {
+                    gfx.DrawImage(bmpSpecIndexed, 0, 0);
+                    int x = spec.FftsProcessed % pbSpectrogram.Width - 1;
+                    gfx.DrawLine(pen, x, 0, x, pbSpectrogram.Height);
+                }
+
+                sw.Stop();
+                pbSpectrogram.Image?.Dispose();
+                pbSpectrogram.Image = bmpSpec;
+                Debug.WriteLine($"Render time: {sw.ElapsedMilliseconds:D2} ms");
+            }
+
+            pnlAmpInner.Width = (int)(listener.AmplitudeFrac * pnlAmpOuter.Width);
+        }
+    }
+}