/// <summary>Creates a new instance of DtmfOccurence.</summary>
/// <param name="dtmfTone">The DTMF tone.</param>
/// <param name="channel">The audio channel where the DTMF tone occured.</param>
/// <param name="position">The estimated position in the file or stream where the DTMF tone occured.</param>
/// <param name="duration">The estimated duration of the DTMF tone.</param>
public DtmfOccurence(DtmfTone dtmfTone, int channel, TimeSpan position, TimeSpan duration)
{
DtmfTone = dtmfTone;
Channel = channel;
Position = position;
Duration = duration;
}
private void GenerateToneWaveFile(string path, DtmfTone tone, int sampleRate, double duration, ISampleProvider noise = null)
{
var tone1 = new SignalGenerator(sampleRate, 1)
{
Gain = 0.5,
Frequency = tone.LowTone,
Type = SignalGeneratorType.Sin
}
.Take(TimeSpan.FromMilliseconds(duration));
var tone2 = new SignalGenerator(sampleRate, 1)
{
Gain = 0.5,
Frequency = tone.HighTone,
Type = SignalGeneratorType.Sin
}
.Take(TimeSpan.FromMilliseconds(duration));
var list = new List <ISampleProvider>(new[] { tone1, tone2 });
if (noise != null)
{
list.Add(noise.Take(TimeSpan.FromMilliseconds(duration)));
}
var mix = new MixingSampleProvider(list);
WaveFileWriter.CreateWaveFile16(path, mix);
}
private DtmfTone AddTone(int frequency)
{
PureTones.TryAddHighTone(frequency);
var tone = _dtmfTone.FirstOrDefault(x => x.HighTone == frequency);
if (tone == null || tone == DtmfTone.None)
{
tone = new DtmfTone(frequency, 0, (PhoneKey)(_dtmfTone.Count() + (int)PhoneKey.Custom1));
DtmfClassification.AddCustomTone(tone);
_dtmfTone.Add(tone);
}
return(tone);
}
/// <summary>Creates a new instance of DtmfToneStart.</summary>
/// <param name="dtmfTone">The DTMF tone.</param>
/// <param name="channel">The audio channel where the DTMF tone occured.</param>
/// <param name="position">The estimated time when the DTMF tone occured.</param>
public DtmfToneStart(DtmfTone dtmfTone, int channel, DateTime position)
{
DtmfTone = dtmfTone;
Channel = channel;
Position = position;
}
private static void AnalyzeWaveFile(string path)
{
using (var log = new Log("waveFile.log"))
{
PureTones.ClearTones();
//PureTones.AddLowTone(0);
//PureTones.AddHighTone(645);
//PureTones.AddTonePair(794, 524); // Station 2
//PureTones.AddTonePair(1084, 794); // Station 3
//PureTones.AddTonePair(716, 645); // Station 6
PureTones.TryAddHighTone(794);
PureTones.TryAddHighTone(881);
PureTones.TryAddHighTone(524);
PureTones.TryAddHighTone(1084);
//PureTones.AddHighTone(881);
PureTones.TryAddHighTone(645);
PureTones.TryAddHighTone(716);
PureTones.TryAddHighTone(384);
PureTones.TryAddHighTone(547);
PureTones.TryAddHighTone(802);
PureTones.TryAddHighTone(346);
PureTones.TryAddHighTone(426);
PureTones.TryAddHighTone(582);
PureTones.TryAddHighTone(757);
PureTones.TryAddHighTone(592);
PureTones.TryAddHighTone(473);
DtmfClassification.ClearAllTones();
DtmfTone custom1 = new DtmfTone(794, 0, PhoneKey.Custom1);
DtmfTone custom2 = new DtmfTone(881, 0, PhoneKey.Custom2);
DtmfTone custom3 = new DtmfTone(524, 0, PhoneKey.Custom3);
DtmfTone custom4 = new DtmfTone(1084, 0, PhoneKey.Custom4);
//DtmfTone custom5 = new DtmfTone(881, 0, PhoneKey.Custom5);
DtmfTone custom6 = new DtmfTone(645, 0, PhoneKey.Custom6);
DtmfTone custom7 = new DtmfTone(716, 0, PhoneKey.Custom7);
DtmfTone custom8 = new DtmfTone(384, 0, PhoneKey.Custom8);
DtmfTone custom9 = new DtmfTone(547, 0, PhoneKey.Custom9);
DtmfTone custom10 = new DtmfTone(802, 0, PhoneKey.Custom10);
DtmfTone custom11 = new DtmfTone(346, 0, PhoneKey.Custom11);
DtmfTone custom12 = new DtmfTone(426, 0, PhoneKey.Custom12);
DtmfTone custom13 = new DtmfTone(582, 0, PhoneKey.Custom13);
DtmfTone custom14 = new DtmfTone(757, 0, PhoneKey.Custom14);
DtmfTone custom15 = new DtmfTone(592, 0, PhoneKey.Custom15);
DtmfTone custom16 = new DtmfTone(473, 0, PhoneKey.Custom16);
DtmfClassification.AddCustomTone(custom1);
DtmfClassification.AddCustomTone(custom2);
DtmfClassification.AddCustomTone(custom3);
DtmfClassification.AddCustomTone(custom4);
//DtmfClassification.AddCustomTone(custom5);
DtmfClassification.AddCustomTone(custom6);
DtmfClassification.AddCustomTone(custom7);
DtmfClassification.AddCustomTone(custom8);
DtmfClassification.AddCustomTone(custom9);
DtmfClassification.AddCustomTone(custom10);
DtmfClassification.AddCustomTone(custom11);
DtmfClassification.AddCustomTone(custom12);
DtmfClassification.AddCustomTone(custom13);
DtmfClassification.AddCustomTone(custom14);
DtmfClassification.AddCustomTone(custom15);
DtmfClassification.AddCustomTone(custom16);
using (var audioFile = new AudioFileReader(path))
{
foreach (var occurence in audioFile.DtmfTones())
{
if (occurence.Duration.TotalSeconds >= .5)
{
log.Add(
$"{occurence.Position.TotalSeconds:00.000} s "
+ $"({occurence.Channel}): "
+ $"{occurence.DtmfTone.Key} key "
+ $"(duration: {occurence.Duration.TotalSeconds:00.000} s)");
}
}
}
}
}
/// <summary>Creates a new instance of DtmfToneEnd.</summary>
/// <param name="dtmfTone">The DTMF tone.</param>
/// <param name="channel">The audio channel where the DTMF tone occured.</param>
/// <param name="duration">The estimated duration of the DTMF tone.</param>
public DtmfToneEnd(DtmfTone dtmfTone, int channel, TimeSpan duration)
{
DtmfTone = dtmfTone;
Channel = channel;
Duration = duration;
}