///
/// <summary> * Create an FFT transformer for a given sample size. This preallocates
/// * resources appropriate to that block size. A specified window
/// * function will be applied to all input data.
/// * </summary>
/// * <param name="size"> The number of samples in a block that we will
/// * be asked to transform. Must be a power of 2. </param>
/// * <param name="window"> Window function to apply to all input data.
/// * Its block size must be the same as the size
/// * parameter. </param>
/// * <exception cref="IllegalArgumentException"> Invalid parameter. </exception>
///
public FFTTransformer(int size, Window window)
{
if (!IsPowerOf2(size))
{
throw new System.ArgumentException("size for FFT must" + " be a power of 2 (was " + size + ")");
}
windowFunc = window;
transformer = new LomontFFT();
blockSize = size;
// Allocate working data arrays.
xre = new double[blockSize];
}
///
/// <summary> * Create an FFT transformer for a given sample size. This preallocates
/// * resources appropriate to that block size. A specified window
/// * function will be applied to all input data.
/// * </summary>
/// * <param name="size"> The number of samples in a block that we will
/// * be asked to transform. Must be a power of 2. </param>
/// * <param name="winfunc"> Window function to apply to all input data. </param>
/// * <exception cref="IllegalArgumentException"> Invalid parameter. </exception>
///
public FFTTransformer(int size, Window.Function winfunc) : this(size, new Window(size, winfunc))
{
}
