The wall-pressure fluctuations induced by low Reynolds number turbulent boundary layers are experimentally studied using flush-mounted microphones. The spatial coherence of the energy is characterized using traditional time-averaged statistical descriptors. A novel analysis is developed, based on the wavelet transform, to study the organization of coherent turbulent events, and their corresponding wall-pressure signatures. This analysis identified that induced irrotational motions/entrained fluid, between neighbouring packets, have wall-pressure signatures below 100 Hz, and packets of hairpin vortices contribute to the wall-pressure energy between 100 Hz and 250 Hz. The packets contain a hierarchy of organized, well-defined events, which contribute to the wall-pressure fluctuations at frequencies above 250 Hz. It is estimated that wallpressure signatures from packets can be retained for up to seven boundary layer thicknesses in the streamwise direction. The composition of events within hairpin packets depends on Reynolds number, showing a shift towards higher-frequency events, with increasing Reynolds number. iv To my parents, thank you for always supporting me. v Table of Contents viii List of Tables xi List of Figures xiii Nomenclature xxi List of References 134