public void StereoDtmfTones()
{
using var file = new AudioFileReader("./testdata/stereo_dtmf_tones.wav");
var dtmfs = file.DtmfChanges(forceMono: false);
dtmfs.ShouldBe(new[] {
DtmfChange.Start(PhoneKey.One, TimeSpan.Parse("00:00:00"), 0),
DtmfChange.Stop(PhoneKey.One, TimeSpan.Parse("00:00:00.9994557"), 0),
DtmfChange.Start(PhoneKey.Two, TimeSpan.Parse("00:00:01.9988208"), 1),
DtmfChange.Stop(PhoneKey.Two, TimeSpan.Parse("00:00:02.9982086"), 1),
DtmfChange.Start(PhoneKey.Three, TimeSpan.Parse("00:00:03.9975736"), 0),
DtmfChange.Start(PhoneKey.Four, TimeSpan.Parse("00:00:04.9969614"), 1),
DtmfChange.Stop(PhoneKey.Three, TimeSpan.Parse("00:00:05.9963265"), 0),
DtmfChange.Stop(PhoneKey.Four, TimeSpan.Parse("00:00:06.9957142"), 1),
DtmfChange.Start(PhoneKey.Five, TimeSpan.Parse("00:00:07.9950793"), 0),
DtmfChange.Start(PhoneKey.Six, TimeSpan.Parse("00:00:07.9950793"), 1),
DtmfChange.Stop(PhoneKey.Five, TimeSpan.Parse("00:00:08.9944444"), 0),
DtmfChange.Stop(PhoneKey.Six, TimeSpan.Parse("00:00:08.9944444"), 1),
DtmfChange.Start(PhoneKey.Seven, TimeSpan.Parse("00:00:09.9938321"), 0),
DtmfChange.Start(PhoneKey.Eight, TimeSpan.Parse("00:00:11.0188208"), 1),
DtmfChange.Stop(PhoneKey.Eight, TimeSpan.Parse("00:00:11.9925850"), 1),
DtmfChange.Stop(PhoneKey.Seven, TimeSpan.Parse("00:00:12.9919501"), 0),
DtmfChange.Start(PhoneKey.Nine, TimeSpan.Parse("00:00:14.0169614"), 0),
DtmfChange.Stop(PhoneKey.Nine, TimeSpan.Parse("00:00:14.9907029"), 0),
DtmfChange.Start(PhoneKey.Zero, TimeSpan.Parse("00:00:15.0163265"), 0),
DtmfChange.Stop(PhoneKey.Zero, TimeSpan.Parse("00:00:15.9900680"), 0),
});
}
private static void AnalyzeFile(string path)
{
AudioFileReader audioFile;
try {
// supports .mp3, .wav, aiff, and Windows Media Foundation formats
audioFile = new AudioFileReader(path);
} catch (COMException e) when(e.ErrorCode == unchecked ((int)0xC00D36C4))
{
throw new InvalidOperationException("Unsupported media type", e);
}
Console.WriteLine($"DTMF tones found in file '{audioFile.FileName}':\n");
foreach (var dtmf in audioFile.DtmfChanges().ToDtmfTones())
{
Console.WriteLine(dtmf);
}
}
public void LongDtmfTones()
{
using var file = new AudioFileReader("./testdata/long_dtmf_tones.mp3");
var dtmfs = file.DtmfChanges();
dtmfs.ShouldBe(new[] {
DtmfChange.Start(PhoneKey.One, TimeSpan.Parse("00:00:02.7675736"), 0),
DtmfChange.Stop(PhoneKey.One, TimeSpan.Parse("00:00:05.5607029"), 0),
DtmfChange.Start(PhoneKey.Two, TimeSpan.Parse("00:00:06.7138321"), 0),
DtmfChange.Stop(PhoneKey.Two, TimeSpan.Parse("00:00:06.8675736"), 0),
DtmfChange.Start(PhoneKey.Three, TimeSpan.Parse("00:00:07.3031972"), 0),
DtmfChange.Stop(PhoneKey.Three, TimeSpan.Parse("00:00:07.4313378"), 0),
DtmfChange.Start(PhoneKey.Four, TimeSpan.Parse("00:00:08.2000680"), 0),
DtmfChange.Stop(PhoneKey.Four, TimeSpan.Parse("00:00:10.5319501"), 0),
DtmfChange.Start(PhoneKey.Five, TimeSpan.Parse("00:00:12.0950793"), 0),
DtmfChange.Stop(PhoneKey.Five, TimeSpan.Parse("00:00:12.2744444"), 0),
DtmfChange.Start(PhoneKey.Six, TimeSpan.Parse("00:00:12.7357142"), 0),
DtmfChange.Stop(PhoneKey.Six, TimeSpan.Parse("00:00:12.8125850"), 0),
DtmfChange.Start(PhoneKey.Seven, TimeSpan.Parse("00:00:14.5038321"), 0),
DtmfChange.Stop(PhoneKey.Seven, TimeSpan.Parse("00:00:14.5294557"), 0),
DtmfChange.Start(PhoneKey.Seven, TimeSpan.Parse("00:00:14.5550793"), 0),
DtmfChange.Stop(PhoneKey.Seven, TimeSpan.Parse("00:00:16.8357142"), 0),
DtmfChange.Start(PhoneKey.Eight, TimeSpan.Parse("00:00:17.6813378"), 0),
DtmfChange.Stop(PhoneKey.Eight, TimeSpan.Parse("00:00:17.7582086"), 0),
DtmfChange.Start(PhoneKey.Nine, TimeSpan.Parse("00:00:18.4500680"), 0),
DtmfChange.Stop(PhoneKey.Nine, TimeSpan.Parse("00:00:18.5269614"), 0),
DtmfChange.Start(PhoneKey.Hash, TimeSpan.Parse("00:00:19.1163265"), 0),
DtmfChange.Stop(PhoneKey.Hash, TimeSpan.Parse("00:00:19.1419501"), 0),
DtmfChange.Start(PhoneKey.Hash, TimeSpan.Parse("00:00:19.1675736"), 0),
DtmfChange.Stop(PhoneKey.Hash, TimeSpan.Parse("00:00:19.3469614"), 0),
DtmfChange.Start(PhoneKey.Zero, TimeSpan.Parse("00:00:19.8338321"), 0),
DtmfChange.Stop(PhoneKey.Zero, TimeSpan.Parse("00:00:19.8850793"), 0),
DtmfChange.Start(PhoneKey.Star, TimeSpan.Parse("00:00:20.4744444"), 0),
DtmfChange.Stop(PhoneKey.Star, TimeSpan.Parse("00:00:20.6025850"), 0),
DtmfChange.Start(PhoneKey.One, TimeSpan.Parse("00:00:22.0119501"), 0),
DtmfChange.Stop(PhoneKey.One, TimeSpan.Parse("00:00:23.7544444"), 0)
});
}
public List <DtmfChange> CurrentRelease() => audioFile.DtmfChanges();
