This project contains the KNIME nodes or digital signal processing.

This node performs a forward Fast Fourier Transformation(FFT) on each row of the input table. Generally speaking, it extracts the frequencies of an input signal.

This node computes statistics in the frequency domain. The chosen statistics will be computed for each row.

This node computes statistics in the time domain. The chosen statistics will be computed for each row.

This node reads in .wav files.

This node bundles together a number of rows and takes an average in every column for this bundle.

This node multiplies the input rows with a window function to prevent spectral leakage in subsequent FFT.

This node creates sliding windows from an input signal which is stored in a table with one column.