public static uint FrequencyRate(double[,] audioWithHeader)
{
string currentASCII = "";
uint posistion = 0;
do
{
byte[] wordLooking =
{
(byte)audioWithHeader[posistion, 0],
(byte)audioWithHeader[posistion + 1, 0],
(byte)audioWithHeader[posistion + 2, 0],
(byte)audioWithHeader[posistion + 3, 0]
};
currentASCII = Conversion.ByteArrayToASCII(wordLooking);
posistion++;
} while (currentASCII != "fmt ");
uint fmtChunkStartLocation = --posistion;
byte[] frequencyBytes =
{
(byte)audioWithHeader[12 + fmtChunkStartLocation, 0],
(byte)audioWithHeader[13 + fmtChunkStartLocation, 0],
(byte)audioWithHeader[14 + fmtChunkStartLocation, 0],
(byte)audioWithHeader[15 + fmtChunkStartLocation, 0]
};
uint value = 0;
Conversion.ByteConverterToInterger(frequencyBytes, ref value);
return(value);
}
public static void LoadAudio(string signalPathwayAndName)
{
byte[] wav = WaveClass.LoadAudioFile(signalPathwayAndName);
string[] seperation = signalPathwayAndName.Split("\\");
string[] nameWithFormat = seperation[seperation.Length - 1].Split(".");
string nameWithoutFormat = nameWithFormat[0];
uint headerSize = 44;
string currentASCII = "";
uint posistion = 0;
do
{
byte[] wordLooking =
{
wav[posistion],
wav[posistion + 1],
wav[posistion + 2],
wav[posistion + 3]
};
currentASCII = Conversion.ByteArrayToASCII(wordLooking);
posistion++;
} while (currentASCII != "fmt ");
uint fmtChunkStartLocation = --posistion;
uint mainHeaderChunkSize = fmtChunkStartLocation;
byte[] sizeArray = new byte[4]
{
wav[fmtChunkStartLocation + 4],//+ 4 to placement because of ID chunk is 4 bytes
wav[fmtChunkStartLocation + 5],
wav[fmtChunkStartLocation + 6],
wav[fmtChunkStartLocation + 7]
};
uint fmtChunkSize = 0;
Conversion.ByteConverterToInterger(sizeArray, ref fmtChunkSize);
sizeArray = new byte[2]
{
wav[fmtChunkStartLocation + 8],
wav[fmtChunkStartLocation + 9]
};
fmtChunkSize += 8;
uint fmtFormatCode = 0;
Conversion.ByteConverterToInterger(sizeArray, ref fmtFormatCode);
uint factChunkStartLocation = 0;
uint factChuckSize = 0;
uint factNumberOfSamples;
if (fmtFormatCode != 1)
{
currentASCII = "";
posistion = 8;
do
{
byte[] wordLooking =
{
wav[posistion],
wav[posistion + 1],
wav[posistion + 2],
wav[posistion + 3]
};
currentASCII = Conversion.ByteArrayToASCII(wordLooking);
posistion++;
} while (currentASCII != "fact");
factChunkStartLocation = --posistion;
}
currentASCII = "";
posistion = 8;
do
{
byte[] wordLooking =
{
wav[posistion],
wav[posistion + 1],
wav[posistion + 2],
wav[posistion + 3]
};
currentASCII = Conversion.ByteArrayToASCII(wordLooking);
posistion++;
} while (currentASCII != "data");
uint dataChunkStartLocation = --posistion;
headerSize = dataChunkStartLocation > factChunkStartLocation ? dataChunkStartLocation + 8 : factChunkStartLocation + factChuckSize;
byte[] wavHeader = new byte[headerSize];
for (int i = 0; i < headerSize; i++)
{
wavHeader[i] = wav[i];
}
ushort channelAmount = WaveClass.ChannelAmount(wavHeader, fmtChunkStartLocation);
uint dataSegmentSize = WaveClass.DataSectionSize(wavHeader, dataChunkStartLocation);
short bitsPerSample = WaveClass.BitsPerSample(wavHeader, fmtChunkStartLocation);
double[,] audioScaled = WaveClass.ByteArrayToTimeDomain(wav, dataSegmentSize, channelAmount, bitsPerSample, (ulong)wavHeader.Length);
double[,] audioWithHeader = AudioStorageProcessing.AddWaveToSignal(audioScaled, wavHeader);
Storage.SignalToStorage(audioWithHeader, nameWithoutFormat);
}
