// 1 oct 22.5Hz to approx. 20000Hz ... 10 variations
public bool Start()
{
m_inputChannelNum = listBoxInput.SelectedIndex;
double startFreq = 22.5;
double endFreq = 20000.0;
int nSamples = SAMPLE_RATE;
System.Diagnostics.Debug.Assert(SAMPLE_RATE <= nSamples);
int nFreq = 0;
for (double f = startFreq; f < endFreq; f *= Math.Pow(2, 1.0 / 3.0))
{
++nFreq;
}
m_seconds = nFreq;
int[] outputData = new int[nFreq * nSamples];
int pos = 0;
for (double f = startFreq; f < endFreq; f *= Math.Pow(2, 1.0 / 3.0))
{
for (int i = 0; i < nSamples; ++i)
{
outputData[pos + i] = 0;
}
for (int i = 0; i < SAMPLE_RATE * (int)numericUpDownPulseCount.Value / f; ++i)
{
outputData[pos + i] = (int)(System.Int32.MaxValue * Math.Sin(2.0 * Math.PI * (i * f / SAMPLE_RATE)));
}
pos += nSamples;
}
foreach (int idx in listBoxOutput.SelectedIndices)
{
asio.OutputSet(idx, outputData, false);
}
asio.InputSet(listBoxInput.SelectedIndex, outputData.Length);
if (0 <= listBoxClockSources.SelectedIndex)
{
asio.ClockSourceSet(listBoxClockSources.SelectedIndex);
}
asio.Start();
progressBar1.Value = 0;
progressBar1.Visible = true;
bw = new BackgroundWorker();
bw.WorkerReportsProgress = true;
bw.DoWork += new DoWorkEventHandler(DoWork);
bw.ProgressChanged += new ProgressChangedEventHandler(ProgressChanged);
bw.RunWorkerCompleted += new RunWorkerCompletedEventHandler(RunWorkerCompleted);
bw.RunWorkerAsync();
buttonStop.Enabled = true;
return(true);
}
private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
{
SignalGeneraterWorkerArg sgwa = (SignalGeneraterWorkerArg)e.Argument;
SignalGenerator sg = new SignalGenerator();
backgroundWorker1.ReportProgress(1, "出力データの準備開始。\r\n");
WavData wavData;
SignalGeneratorResult cwdr
= sg.GenerateSignal(sgwa.sgParams, out wavData);
switch (cwdr)
{
case SignalGeneratorResult.Success:
backgroundWorker1.ReportProgress(2, "出力データの準備完了。\r\n");
break;
case SignalGeneratorResult.LevelOver:
backgroundWorker1.ReportProgress(2, "レベルオーバー。出力レベルを下げて下さい。\r\n");
break;
default:
System.Diagnostics.Debug.Assert(false);
break;
}
switch (sgwa.outputMode)
{
case OutputMode.WavFile:
if (!WriteWavFile(wavData, sgwa.outputPath))
{
backgroundWorker1.ReportProgress(3, string.Format("書き込み失敗: {0}\r\n", sgwa.outputPath));
return;
}
backgroundWorker1.ReportProgress(3, string.Format("書き込み成功: {0}\r\n", sgwa.outputPath));
break;
case OutputMode.Asio:
{
// short → int に拡張
int[] asioData = new int[wavData.NumSamples];
for (int i = 0; i < wavData.NumSamples; ++i)
{
asioData[i] = wavData.Sample16Get(0, i) << 16;
}
// 出力デバイスに出力データをセット
foreach (int ch in sgwa.outputChannels)
{
asio.OutputSet(ch, asioData, true);
}
// 開始
asio.Start();
/* backgroundWorker1.ReportProgress(3,
* string.Format("出力開始。{0}Hz {1} {2}dB\r\n", sgwa.sgParams.freq, sgwa.sgParams.ss, sgwa.sgParams.dB)); */
while (!asio.Run())
{
}
backgroundWorker1.ReportProgress(3, "出力終了。\r\n");
}
break;
default:
System.Diagnostics.Debug.Assert(false);
break;
}
}