public void AnalyzeSignal_KnownSignal_ReturnsExpectedValues()
{
var audioStream = new MemoryStream();
var audioGenerator = new AudioGenerator(audioStream);
var fskAudioGenerator = new FskAudioGenerator(audioGenerator);
fskAudioGenerator.GenerateAudio(_binaryFskAnalyzerSettings.BaudRate,
_binaryFskAnalyzerSettings.SpaceFrequency, _binaryFskAnalyzerSettings.MarkFrequency,
_bitManipulator.StringToBits(Resources.LoremIpsumTestString));
var audioAnalyzer = new AudioAnalyzer(audioStream, audioGenerator);
var binaryFskAnalyzer = (IBinaryFskAnalyzer) new BinaryFskAnalyzer(audioAnalyzer, new ZeroCrossingsFrequencyDetector(), _binaryFskAnalyzerSettings);
var results = binaryFskAnalyzer.AnalyzeSignal();
var result = binaryFskAnalyzer.AnalyzeSignal();
var bits = new List <bool>();
foreach (var frame in result.AnalysisFrames)
{
if (frame.Bit.HasValue == true)
{
bits.Add(frame.Bit.Value);
}
}
var ascii = BitManipulator.BitsToString(bits);
Assert.AreEqual(Resources.LoremIpsumTestString, ascii);
}
public static void Main(string[] args)
{
var bitManipulator = new BitManipulator();
var myBits = bitManipulator.StringToBits(Resources.BigLebowskiQuote);
Console.WriteLine($"Length of string in bits: {myBits.Count}");
var audioStream = new MemoryStream();
var binaryFskAnalyzerSettings = new Bell103BinaryFskAnalyzerSettings();
var audioGenerator = new AudioGenerator(audioStream);
var fskAudioGenerator = new FskAudioGenerator(audioGenerator);
fskAudioGenerator.GenerateAudio(binaryFskAnalyzerSettings.BaudRate,
binaryFskAnalyzerSettings.SpaceFrequency, binaryFskAnalyzerSettings.MarkFrequency, myBits);
var audioLengthInMicroseconds = (int)(myBits.Count * Math.Pow(10, 6) / binaryFskAnalyzerSettings.BaudRate);
Console.WriteLine($"Length of audio in seconds: {audioLengthInMicroseconds / Math.Pow(10, 6):N1}");
Console.WriteLine();
Console.WriteLine(Resources.BigLebowskiQuote);
Console.WriteLine();
AudioAnalyzer.Play(audioStream, audioLengthInMicroseconds / 1000);
audioGenerator = new AudioGenerator(audioStream);
fskAudioGenerator = new FskAudioGenerator(audioGenerator);
fskAudioGenerator.GenerateAudio(binaryFskAnalyzerSettings.BaudRate,
binaryFskAnalyzerSettings.SpaceFrequency, binaryFskAnalyzerSettings.MarkFrequency, myBits);
var binaryFskAnalyzer = new BinaryFskAnalyzer(new AudioAnalyzer(audioStream, audioGenerator), new ZeroCrossingsFrequencyDetector(), binaryFskAnalyzerSettings);
Console.WriteLine($"Window position start {binaryFskAnalyzerSettings.WindowPositionStartMicroseconds:N3} us, window position end {binaryFskAnalyzerSettings.WindowPositionEndMicroseconds:N3} us, window position increment {binaryFskAnalyzerSettings.WindowPositionIncrementMicroseconds:N3} us");
Console.WriteLine($"Window length start {binaryFskAnalyzerSettings.WindowLengthStartMicroseconds:N3} us, window length end {binaryFskAnalyzerSettings.WindowLengthEndMicroseconds:N3} us, window length increment {binaryFskAnalyzerSettings.WindowLengthIncrementMicroseconds:N3} us");
Console.WriteLine();
var result = binaryFskAnalyzer.AnalyzeSignal();
var bits = new List <bool>();
foreach (var frame in result.AnalysisFrames)
{
if (frame.Bit.HasValue == true)
{
bits.Add(frame.Bit.Value);
}
}
Console.WriteLine("Rendering bytes");
Console.WriteLine();
var renderer = (IRenderer) new RowRenderer();
renderer.Render(BitManipulator.BitsToBytes(bits));
Console.WriteLine();
Console.WriteLine();
Console.WriteLine("Rendering ASCII");
Console.WriteLine();
renderer = new AsciiRenderer();
renderer.Render(BitManipulator.BitsToBytes(bits));
Console.WriteLine();
Console.WriteLine("Done");
Console.ReadLine();
}
public void Run(TestRunnerArguments arguments)
{
var fileTimestamp = DateTime.Now.ToString("yyyyMMdd_HHmmss");
var bitManipulator = new BitManipulator();
var bits = bitManipulator.StringToBits(arguments.TestString);
for (var baudRate = arguments.BaudStart; baudRate <= arguments.BaudEnd; baudRate += arguments.BaudIncrement)
{
for (var loopBoostFrequency = arguments.BoostStart; loopBoostFrequency <= arguments.BoostEnd;
loopBoostFrequency += arguments.BoostIncrement)
{
_binaryFskAnalyzerSettings = new Bell103BinaryFskAnalyzerSettings
{
SpaceFrequency = arguments.SpaceFrequency,
MarkFrequency = arguments.MarkFrequency,
BaudRate = baudRate,
FrequencyDeviationTolerance = arguments.Tolerance
};
_audioStream = new MemoryStream();
_audioGenerator = new AudioGenerator(_audioStream);
_fskAudioGenerator = new FskAudioGenerator(_audioGenerator);
_fskAudioGenerator.GenerateAudio(_binaryFskAnalyzerSettings.BaudRate,
_binaryFskAnalyzerSettings.SpaceFrequency, _binaryFskAnalyzerSettings.MarkFrequency, bits);
var audioLengthInMicroseconds = (int)(bits.Count * Math.Pow(10, 6) / _binaryFskAnalyzerSettings.BaudRate);
_audioStream = new MemoryStream();
_audioGenerator = new AudioGenerator(_audioStream);
_fskAudioGenerator = new FskAudioGenerator(_audioGenerator);
var samples = _fskAudioGenerator.GenerateAudio(_binaryFskAnalyzerSettings.BaudRate,
_binaryFskAnalyzerSettings.SpaceFrequency, _binaryFskAnalyzerSettings.MarkFrequency, bits);
SignalGenerationComplete(bits.Count, audioLengthInMicroseconds, samples, _audioAnalyzer.SampleRate);
if (arguments.WriteFaveFiles == true)
{
using (var file = File.Create($"{fileTimestamp}_{baudRate}_baud.wav"))
{
var previousPosition = _audioStream.Position;
_audioStream.Position = 0;
_audioStream.CopyTo(file);
_audioStream.Position = previousPosition;
}
}
_binaryFskAnalyzerSettings = new Bell103BinaryFskAnalyzerSettings
{
SpaceFrequency = (int)(arguments.SpaceFrequency + loopBoostFrequency),
MarkFrequency = (int)(arguments.MarkFrequency + loopBoostFrequency),
BaudRate = baudRate,
FrequencyDeviationTolerance = arguments.Tolerance
};
_audioAnalyzer = new AudioAnalyzer(_audioStream, _audioGenerator, (int)loopBoostFrequency);
FskAnalyzer.Initialize(_audioAnalyzer, new ZeroCrossingsFrequencyDetector(), _binaryFskAnalyzerSettings);
FskAnalyzer.AnalyzeSignal(arguments.TestString);
if (arguments.PlayAudio == true)
{
AudioAnalyzer.Play(_audioStream, (int)Math.Ceiling((audioLengthInMicroseconds / Math.Pow(10, 3))));
}
}
}
}
public TestRunner(BinaryFskAnalyzerSettings binaryFskAnalyzerSettings = null,
IFrequencyDetector frequencyDetector = null)
{
_audioStream = new MemoryStream();
_audioGenerator = new AudioGenerator(_audioStream);
_fskAudioGenerator = new FskAudioGenerator(_audioGenerator);
_binaryFskAnalyzerSettings = binaryFskAnalyzerSettings != null ? binaryFskAnalyzerSettings : new Bell103BinaryFskAnalyzerSettings();
var bitManipulator = new BitManipulator();
_fskAudioGenerator.GenerateAudio(_binaryFskAnalyzerSettings.BaudRate, _binaryFskAnalyzerSettings.SpaceFrequency,
_binaryFskAnalyzerSettings.MarkFrequency, bitManipulator.StringToBits("Test string"));
_audioAnalyzer = new AudioAnalyzer(_audioStream, _audioGenerator);
_frequencyDetector = frequencyDetector != null ? frequencyDetector : new ZeroCrossingsFrequencyDetector();
FskAnalyzer = new BinaryFskAnalyzer(_audioAnalyzer, _frequencyDetector, _binaryFskAnalyzerSettings);
}
