This paper presents the effect of axial acoustic fields on non-evaporative sprays. Investigations were performed using distilled water as the spray liquid, at the open end of a duct fitted with acoustic drivers. The spray field was characterized using particle image velocimetry (PIV), phase Doppler particle size analyzer (PDPA) and three component laser Doppler velocimetry (3C-LDV) measurements. The spray velocity fields are altered with respect to the acoustic velocity oscillations in an acoustic cycle. Length of the zone having high rms velocity magnitudes is shortened with increase in counter flowing acoustic velocity. Variation in phase averaged droplet diameter and their distribution in presence of acoustic velocity oscillations in an acoustic cycle is noticed. The variation of droplet velocity, diameter and their distribution in presence of acoustic velocity oscillations increases with increase in acoustic pressure amplitude. A maximum variation of 25% in phase averaged droplet diameter is observed in an acoustic cycle. The atomization and diameter distribution of the spray is altered in an acoustic cycle. Smaller diameter droplets are entrained by the acoustic velocity oscillations. Copyright © 2008 by R. Kumara Gurubaran and R. I. Sujith.