Direct numerical simulations of a turbulent boundary layer over a bump were performed to examine the effects of surface longitudinal curvature on flow induced noise. Turbulence statistics and frequency spectra were obtained to elucidate the response of wall pressure fluctuations (pw) to the longitudinal curvature and to the corresponding pressure gradient. Acoustic sources of the Lighthill equations were investigated in detail at various longitudinal surface curvatures. The acoustic sources (S) were highest near the trailing edge of the bump, where the r.m.s. wall pressure fluctuations were greatest. The maximum correlation coefficient between pw and S was located just above the location of maximum wall pressure fluctuations. Far-field acoustic density fluctuations were computed using the Lighthill acoustic analogy.