public void ApplyTest() { Signal target = Signal.FromArray(data, 8000); for (int c = 0; c < 2; c++) { ExtractChannel extract = new ExtractChannel(c); var result = extract.Apply(target); Assert.AreEqual(result.Length, 6); Assert.AreEqual(result.Samples, 6); Assert.AreEqual(result.Channels, 1); Assert.AreEqual(result.SampleRate, 8000); float[] actual = result.ToFloat(); float[] expected = data.GetColumn(c); for (int i = 0; i < actual.Length; i++) Assert.AreEqual(expected[i], actual[i]); } }
private static WavechartBox show(String title, bool hold, params Tuple<Signal, int>[] series) { WavechartBox form = null; Thread formThread = null; AutoResetEvent stopWaitHandle = new AutoResetEvent(false); formThread = new Thread(() => { Application.EnableVisualStyles(); Application.SetCompatibleTextRenderingDefault(false); // Show control in a form form = new WavechartBox(); form.Text = title; form.formThread = formThread; if (!String.IsNullOrEmpty(title)) { form.zedGraphControl.GraphPane.Title.IsVisible = true; form.zedGraphControl.GraphPane.Title.Text = title; } var sequence = new ColorSequenceCollection(series.Length); for (int i = 0; i < series.Length; i++) { var signal = series[i].Item1; int channel = series[i].Item2; ComplexSignal complex = signal as ComplexSignal; if (complex != null && complex.Status != ComplexSignalStatus.Normal) { double[] spectrum = Accord.Audio.Tools .GetPowerSpectrum(complex.GetChannel(channel)); double[] frequencies = Accord.Audio.Tools.GetFrequencyVector(signal.Length, signal.SampleRate); form.series.Add(new LineItem(i.ToString(), frequencies, spectrum, sequence.GetColor(i), SymbolType.None)); form.zedGraphControl.GraphPane.XAxis.Title.Text = "Frequency"; form.zedGraphControl.GraphPane.YAxis.Title.Text = "Power"; } else { double[] values; if (signal.Channels == 1) { values = signal.ToDouble(); } else { ExtractChannel extract = new ExtractChannel(channel); values = extract.Apply(signal).ToDouble(); } form.series.Add(new LineItem(i.ToString(), Matrix.Indices(0, signal.Length).ToDouble(), values, sequence.GetColor(i), SymbolType.None)); form.zedGraphControl.GraphPane.XAxis.Title.Text = "Time"; form.zedGraphControl.GraphPane.YAxis.Title.Text = "Amplitude"; } } form.zedGraphControl.GraphPane.AxisChange(); stopWaitHandle.Set(); Application.Run(form); }); formThread.SetApartmentState(ApartmentState.STA); formThread.Start(); stopWaitHandle.WaitOne(); if (!hold) formThread.Join(); return form; }