Multi-resolution analysis of gravitational-wave signals with the WDM transform

Searches for transient gravitational wave signals are often performed in the time-frequency domain to identify localized excess power of GW signals. Sensitivity of such (burst) searches improves if the energy of the signal can be captured with a smaller number of the time-frequency components. We present a novel multi-resolution algorithm based on the Wilson-Daubechies-Meyer time-frequency transform which can efficiently represent GW transients with minimal number of time-frequency components and significantly improves the sensitivity of burst searches.