public void Configure(float sampleRate, int bufferSize)
{
//Complain if too low
if (sampleRate < BAUD_RATE)
{
throw new Exception($"The sample rate specified, {sampleRate}, is too low to be useful. Must be >= {BAUD_RATE}.");
}
//Create parts
fmDemod = new FmBasebandDemodulator();
fmDemod.Configure(bufferSize, sampleRate);
amDemod = new AmBasebandDemodulator();
osc = new Oscillator(sampleRate, -2400);
symbolsPerSample = BAUD_RATE / sampleRate;
//Make filter
var filterBuilder = new LowPassFilterBuilder(sampleRate, 2080)
.SetAutomaticTapCount(200)
.SetWindow();
filter = RealFirFilter.CreateFirFilter(filterBuilder);
//Create buffer
buffer?.Dispose();
buffer = UnsafeBuffer.Create(bufferSize, out bufferPtr);
}
public WbFmDemodulator(BackgroundWorker worker = null)
{
//Create parts
fm = new FmBasebandDemodulator();
deemphasisL = new DeemphasisProcessor();
deemphasisR = new DeemphasisProcessor();
rdsDemodulator = new RDSDecoder();
rdsDemodulator.OnSyncStateChanged += (bool sync) => OnRdsDetected?.Invoke(sync);
rdsDemodulator.OnFrameDecoded += (ulong frame) => OnRdsFrameEmitted?.Invoke(frame);
//Apply defaults
this.worker = worker;
DeemphasisTime = 75; //Configured for America
//DeemphasisTime = 50; //Configured for rest of the world
}
