public IAsyncOperation <AudioFrameReader> OpenAudioFrameReaderAsync()
{
return(Task.Run(async() =>
{
if (AudioReader == null)
{
var microphones = await DeviceInformation.FindAllAsync(DeviceInformation.GetAqsFilterFromDeviceClass(DeviceClass.AudioCapture));
var kinectMicArray = microphones.FirstOrDefault(mic => mic.Name.ToLowerInvariant().Contains("xbox nui sensor"));
if (kinectMicArray != null)
{
//TODO: review parameters
var settings = new AudioGraphSettings(AudioRenderCategory.Speech);
settings.EncodingProperties = AudioEncodingProperties.CreatePcm(16000, 4, 32);
settings.EncodingProperties.Subtype = MediaEncodingSubtypes.Float;
settings.QuantumSizeSelectionMode = QuantumSizeSelectionMode.LowestLatency;
settings.DesiredRenderDeviceAudioProcessing = Windows.Media.AudioProcessing.Raw;
var audioGraphResult = await AudioGraph.CreateAsync(settings);
if (audioGraphResult.Status == AudioGraphCreationStatus.Success)
{
var inputNodeResult = await audioGraphResult.Graph.CreateDeviceInputNodeAsync(MediaCategory.Speech, audioGraphResult.Graph.EncodingProperties, kinectMicArray);
if (inputNodeResult.Status == AudioDeviceNodeCreationStatus.Success)
{
var output = audioGraphResult.Graph.CreateFrameOutputNode(audioGraphResult.Graph.EncodingProperties);
AudioReader = new AudioFrameReader(audioGraphResult.Graph, output);
}
}
}
}
AudioReader?.Open();
return AudioReader;
}).AsAsyncOperation());
}
AudioReader Import(string fileName)
{
browser.FileName = fileName;
if (browser.ShowDialog().Value)
{
return(AudioReader.Open(browser.FileName));
}
return(null);
}
void ProcessImpulse(object sender, RoutedEventArgs e)
{
if (browser.ShowDialog().Value)
{
AudioReader reader = AudioReader.Open(browser.FileName);
float[] impulse = reader.Read();
float gain = 1;
if (keepGain.IsChecked.Value)
{
gain = WaveformUtils.GetPeak(impulse);
}
if (commonEQ.IsChecked.Value)
{
ProcessCommon(reader, ref impulse);
}
else
{
ProcessPerChannel(reader, ref impulse);
}
if (keepGain.IsChecked.Value)
{
WaveformUtils.Gain(impulse, gain / WaveformUtils.GetPeak(impulse));
}
BitDepth bits = reader.Bits;
if (forceFloat.IsChecked.Value)
{
bits = BitDepth.Float32;
}
int targetLen = QMath.Base2Ceil((int)reader.Length);
if (separateExport.IsChecked.Value)
{
ReferenceChannel[] channels = ChannelPrototype.GetStandardMatrix(reader.ChannelCount);
for (int ch = 0; ch < reader.ChannelCount; ++ch)
{
string exportName = Path.GetFileName(browser.FileName);
int idx = exportName.LastIndexOf('.');
string channelName = ChannelPrototype.Mapping[(int)channels[ch]].Name;
exporter.FileName = $"{exportName[..idx]} - {channelName}{exportName[idx..]}";
static Dictionary <int, Dictionary <int, float[][]> > ImportImpulses(string path, Regex pattern)
{
Settings.Default.LastFolder = path;
string[] folders = Directory.GetFiles(path);
Dictionary <int, Dictionary <int, float[][]> > data = new Dictionary <int, Dictionary <int, float[][]> >();
for (int file = 0; file < folders.Length; ++file)
{
string fileName = Path.GetFileName(folders[file]);
Match match = pattern.Match(fileName);
if (match.Success &&
int.TryParse(match.Groups["param1"].Value, out int angle) &&
int.TryParse(match.Groups["param2"].Value, out int distance))
{
if (!data.ContainsKey(angle))
{
data.Add(angle, new Dictionary <int, float[][]>());
}
data[angle][distance] = AudioReader.Open(folders[file]).ReadMultichannel();
}
}
return(data);
}
