PadSignal

Pads a signal with portions of the signal itself to decrease end effects.

Description

This function searches the interior of a signal in an attempt to find a segment that may be used in order to make the signal quasi-periodic. This can be used to reduce the influence of end effects on analyses such as the Hilbert Transform, the Wavelet Transform, the Hilbert-Huang Transform and EMD, or Hilbert Vibration Decomposition. It is not perfect but has helped me in my analyses and hopefully it can help you too.

Please post a comment or send me an email if there are any changes you would like to see in the code.

• MATLAB release: MATLAB 7.8 (R2009a)
• Other requirements: None but demo does require Signal Processing Toolbox in order to perform the Hilbert Transform