public static void Resample(BigArray <float> samples, int oldFrequency, int newFrequency)
{
if (oldFrequency == newFrequency)
{
return;
}
temp.Clear();
float ratio = (float)oldFrequency / (float)newFrequency;
int outSample = 0;
while (true)
{
int inBufferIndex = (int)(outSample++ *ratio);
if (inBufferIndex < samples.Length)
{
temp.Add(samples[inBufferIndex]);
}
else
{
break;
}
}
samples.Resize(temp.Count);
samples.CopyFrom(temp.Items, 0, 0, temp.Count * 4);
}
void resample(float[] tempArray)
{
//resampleBuffer = new BigArray<float>( tempArray.Length, tempArray.Length );
resampleBuffer.Resize(tempArray.Length);
resampleBuffer.CopyFrom(tempArray, 0, 0, tempArray.Length * 4);
//Debug.Log( "Resampling from: " + recordedAudio.frequency + ", to: " + this.recordingFrequency );
AudioUtils.Resample(resampleBuffer, recordedAudio.frequency, this.recordingFrequency);
}
public override void StartRecording()
{
float[] data = new float[testClip.samples * testClip.channels];
testClip.GetData(data, 0);
BigArray <float> d = new BigArray <float>(data.Length, 0);
d.Resize(data.Length);
d.CopyFrom(data, 0, 0, data.Length * 4);
//AudioUtils.Resample( d, testClip.frequency, AudioUtils.GetFrequency( ResampleFrequency ) );
//bufferReady( d, AudioUtils.GetFrequency( ResampleFrequency ) );
StartCoroutine(yieldChunks(d, testClip.frequency, 1f));
}
private IEnumerator yieldChunks(BigArray <float> data, int chunkSize, float chunkDuration)
{
int readHead = 0;
while (readHead < data.Length)
{
int remainder = chunkSize;
if (readHead + chunkSize >= data.Length)
{
remainder = data.Length - readHead;
}
BigArray <float> temp = new BigArray <float>(remainder, 0);
temp.Resize(remainder);
temp.CopyFrom(data.Items, readHead * 4, 0, remainder * 4);
AudioUtils.Resample(temp, testClip.frequency, AudioUtils.GetFrequency(ResampleFrequency));
bufferReady(temp, AudioUtils.GetFrequency(ResampleFrequency));
readHead += remainder;
yield return(new WaitForSeconds(chunkDuration));
}
}