private void button2_Click(object sender, EventArgs e)
{
bool normalized = false;
Crossover crossover = Crossover.createThreeWayCrossover(Int32.Parse(txtLowerFreq.Text),
Int32.Parse(txtUpperFreq.Text), Int32.Parse(txtLowerTrans.Text), Int32.Parse(txtUpperTrans.Text),
44100, normalized, false, 10.0);
RawFileReader rdr = new RawFileReader(lblFileName.Text, 16, 44100, 2);
ConvertBitsPerSample bps = new ConvertBitsPerSample(rdr, 24);
CrossoverThreeWayFilter filter = new CrossoverThreeWayFilter(bps, crossover);
measureErrorDB(filter, crossover.wooferFilterKernel.Length);
}
private void btnPlay_Click(object sender, EventArgs e)
{
IAudioFilter waveRdr;
// For the purposes of testing we process .raw files as
// containing 16-bit stereo PCM data at 44.1KHz. This is much
// like a .wav file but without the header.
if (lblFileName.Text.EndsWith(".raw"))
{
waveRdr = new RawFileReader(lblFileName.Text, 16, 44100, 2);
}
else
{
IWaveSource inputFile = CodecFactory.Instance.GetCodec(lblFileName.Text);
waveRdr = new WaveSourceReader(inputFile);
}
// Convert to 24 bit samples (if needed)
ConvertBitsPerSample bpsConvert = new ConvertBitsPerSample(waveRdr, 24);
// Create a crossover and catch any errors in case the frequency parameters
// are not valid
Crossover crossover;
try
{
crossover = Crossover.createThreeWayCrossover(Int32.Parse(txtLowerFreq.Text),
Int32.Parse(txtUpperFreq.Text), Int32.Parse(txtLowerTrans.Text), Int32.Parse(txtUpperTrans.Text),
waveRdr.SampleRate, true, false, 10.0);
}
catch (Exception ex)
{
MessageBox.Show(this, "Error building crossover: " + ex.Message);
return;
}
// Start creating filters...
CrossoverThreeWayFilter filter = new CrossoverThreeWayFilter(bpsConvert, crossover);
sampleTap = new SampleTap(filter, SAMPLE_LEN);
int crossoverIdx = 1;
if (rdoPlayWoofer.Checked)
{
crossoverIdx = 0;
}
else if (rdoPlayMidrange.Checked)
{
crossoverIdx = 1;
}
else if (rdoPlayTweeter.Checked)
{
crossoverIdx = 2;
}
channelSelectFilter = new SelectCrossover(sampleTap, crossoverIdx);
volumeControlFilter = new VolumeControl(channelSelectFilter);
// Only needed for playback through Windows
lastFilterStep = new ConvertBitsPerSample(volumeControlFilter, 16);
// Done creating filters...
tbarFilePosition.Value = 0;
// Max in seconds
tbarFilePosition.Maximum = (int)(lastFilterStep.Length / lastFilterStep.SampleRate / lastFilterStep.NumberOfChannels);
tbarFilePosition.Enabled = true;
// Playback through Windows
IWaveSource finalWaveSource = new FilterToWaveSource(lastFilterStep);
//_soundOut = new WasapiOut();
soundOutDevice = new WaveOut();
soundOutDevice.Initialize(finalWaveSource);
soundOutDevice.Play();
tmrUpdateViz.Start();
}
