| public ResampleCopyFrom ( float sourceArray, double trueInterpolatedIndex, int targetLength, int targetOffset, double resamplingFactor ) : double | ||
| sourceArray | float | |
| trueInterpolatedIndex | double | |
| targetLength | int | |
| targetOffset | int | |
| resamplingFactor | double | |
| return | double | |
public int GetResampledData(GATData target, int targetLength, int offsetInTarget, double pitch)
{
double dLastIndex = _nextIndex + pitch * (targetLength - 1);
int iLastIndex = ( int )dLastIndex;;
int sign = System.Math.Sign(pitch);
if (dLastIndex - ( double )iLastIndex > 0d)
{
iLastIndex += sign;
}
if (iLastIndex >= _data.Count - 1)
{
targetLength = ( int )((( double )(_data.Count - 1) - _nextIndex) / pitch);
target.ResampleCopyFrom(_data.ParentArray, _nextIndex + ( double )_data.MemOffset, targetLength, offsetInTarget, pitch);
return(targetLength);
}
else if (iLastIndex < 0)
{
targetLength = -( int )((_nextIndex - 1d) / pitch) + 1;
target.ResampleCopyFrom(_data.ParentArray, _nextIndex + ( double )_data.MemOffset, targetLength, offsetInTarget, pitch);
return(targetLength);
}
else
{
target.ResampleCopyFrom(_data.ParentArray, _nextIndex + ( double )_data.MemOffset, targetLength, offsetInTarget, pitch);
_nextIndex = dLastIndex + pitch;
return(targetLength);
}
}
/// <summary>
/// Performs a resampled
/// copy to another GATData
/// instance.
/// The resampling algorithm
/// performs naive linear interpolation.
/// </summary>
/// <returns>
/// The next interpolated index.
/// </returns>
public double ResampleCopyTo(double trueInterpolatedIndex, GATData destinationSample, int targetLength, double resamplingFactor)
{
return(destinationSample.ResampleCopyFrom(_parentArray, trueInterpolatedIndex, targetLength, 0, resamplingFactor));
}
/// <summary>
/// Performs a resampled
/// copy to another
/// GATData instance
/// The resampling algorithm
/// performs naive linear interpolation.
/// Warning: for resampling in chunks, use
/// the method of the same name which returns
/// a double interpolated index.
/// </summary>
public void ResampleCopyTo(int sourceIndex, GATData destinationSample, int targetLength, double resamplingFactor)
{
sourceIndex += _offset;
destinationSample.ResampleCopyFrom(_parentArray, ( double )sourceIndex, targetLength, 0, resamplingFactor);
}
/// <summary>
/// Performs a resampled
/// copy to another GATData
/// instance.
/// The resampling algorithm
/// performs naive linear interpolation.
/// </summary>
/// <returns>
/// The next interpolated index.
/// </returns>
public double ResampleCopyTo( double trueInterpolatedIndex, GATData destinationSample, int targetLength, double resamplingFactor )
{
return destinationSample.ResampleCopyFrom( _parentArray, trueInterpolatedIndex, targetLength, 0, resamplingFactor );
}
/// <summary>
/// Performs a resampled
/// copy to another
/// GATData instance
/// The resampling algorithm
/// performs naive linear interpolation.
/// Warning: for resampling in chunks, use
/// the method of the same name which returns
/// a double interpolated index.
/// </summary>
public void ResampleCopyTo( int sourceIndex, GATData destinationSample, int targetLength, double resamplingFactor )
{
sourceIndex += _offset;
destinationSample.ResampleCopyFrom( _parentArray, ( double )sourceIndex, targetLength, 0, resamplingFactor );
}