private void playAudio()
{
byte[] original_sound = this.stream.ToArray();
byte[] accelerated_sound = new byte[original_sound.Length / 2];
for (int i = 0; i < original_sound.Length; i = i + 4)
{
int first_lvl = BitConverter.ToInt16(original_sound, i);
int second_lvl = BitConverter.ToInt16(original_sound, i);
byte[] average = BitConverter.GetBytes((short)((first_lvl + second_lvl) / 2));
average.CopyTo(accelerated_sound, i / 2);
}
SoundEffect sound = new SoundEffect(accelerated_sound, microphone.SampleRate, AudioChannels.Mono);
sound.Play();
this.durationTalkPiglet = (int)SoundEffect.GetSampleDuration(accelerated_sound.Length, microphone.SampleRate, AudioChannels.Mono).TotalMilliseconds;
this.timerPigletTalk.Interval = new TimeSpan(0, 0, 0, 0, 100);
this.timerPigletTalk.Start();
this.timerPigletListening.Interval = SoundEffect.GetSampleDuration(accelerated_sound.Length, microphone.SampleRate, AudioChannels.Mono).Add(TimeSpan.FromMilliseconds(1000));
this.timerPigletListening.Start();
this.ImagePigletTalk.Source = new BitmapImage(new Uri("/Images/fonem/fonem_" + Convert.ToString(this.rnd.Next(1, 6)) + ".png", UriKind.Relative));
}
public void GetSampleDuration()
{
// Test sizeInBytes range.
Assert.Throws <ArgumentException>(() => SoundEffect.GetSampleDuration(-1, 8000, AudioChannels.Mono));
Assert.DoesNotThrow(() => SoundEffect.GetSampleDuration(1, 8000, AudioChannels.Mono));
Assert.DoesNotThrow(() => SoundEffect.GetSampleDuration(2, 8000, AudioChannels.Mono));
Assert.DoesNotThrow(() => SoundEffect.GetSampleDuration(3, 8000, AudioChannels.Mono));
// Test sampleRate range.
Assert.Throws <ArgumentOutOfRangeException>(() => SoundEffect.GetSampleDuration(2, -1, AudioChannels.Mono));
Assert.Throws <ArgumentOutOfRangeException>(() => SoundEffect.GetSampleDuration(2, 0, AudioChannels.Mono));
Assert.Throws <ArgumentOutOfRangeException>(() => SoundEffect.GetSampleDuration(2, 8000 - 1, AudioChannels.Mono));
Assert.DoesNotThrow(() => SoundEffect.GetSampleDuration(2, 8000, AudioChannels.Mono));
Assert.DoesNotThrow(() => SoundEffect.GetSampleDuration(2, 48000, AudioChannels.Mono));
Assert.Throws <ArgumentOutOfRangeException>(() => SoundEffect.GetSampleDuration(2, 48000 + 1, AudioChannels.Mono));
Assert.Throws <ArgumentOutOfRangeException>(() => SoundEffect.GetSampleDuration(2, int.MaxValue, AudioChannels.Mono));
// Test channel range.
Assert.Throws <ArgumentOutOfRangeException>(() => SoundEffect.GetSampleDuration(2, 8000, (AudioChannels)(-1)));
Assert.Throws <ArgumentOutOfRangeException>(() => SoundEffect.GetSampleDuration(2, 8000, (AudioChannels)0));
Assert.DoesNotThrow(() => SoundEffect.GetSampleDuration(2, 8000, AudioChannels.Mono));
Assert.DoesNotThrow(() => SoundEffect.GetSampleDuration(2, 8000, AudioChannels.Stereo));
Assert.Throws <ArgumentOutOfRangeException>(() => SoundEffect.GetSampleDuration(2, 8000, (AudioChannels)3));
Assert.Throws <ArgumentOutOfRangeException>(() => SoundEffect.GetSampleDuration(2, 8000, (AudioChannels)int.MaxValue));
// Test for zero duration.
Assert.AreEqual(TimeSpan.Zero, SoundEffect.GetSampleDuration(0, 8000, AudioChannels.Mono));
Assert.AreEqual(TimeSpan.Zero, SoundEffect.GetSampleDuration(0, 48000, AudioChannels.Mono));
Assert.AreEqual(TimeSpan.Zero, SoundEffect.GetSampleDuration(0, 8000, AudioChannels.Stereo));
Assert.AreEqual(TimeSpan.Zero, SoundEffect.GetSampleDuration(0, 48000, AudioChannels.Stereo));
// Test for one second.
Assert.AreEqual(TimeSpan.FromSeconds(1), SoundEffect.GetSampleDuration(16000, 8000, AudioChannels.Mono));
Assert.AreEqual(TimeSpan.FromSeconds(1), SoundEffect.GetSampleDuration(96000, 48000, AudioChannels.Mono));
Assert.AreEqual(TimeSpan.FromSeconds(1), SoundEffect.GetSampleDuration(32000, 8000, AudioChannels.Stereo));
Assert.AreEqual(TimeSpan.FromSeconds(1), SoundEffect.GetSampleDuration(192000, 48000, AudioChannels.Stereo));
}