Some aspects of flow noise suppression are discussed on the basis of the processes underlying the physics of flow noise formation [A. C. Peter, J. Acoust. Soc. Am. 59, S92 (A) (1976)]. It is shown that, for a given fluid, the efficiency of noise emission is a function of the frictional temperature rise attained by the frictional disturbance front. Accordingly, an early collapse of this disturbance front will cause a reduction of its lifetime (i.e., the time elapsed from the formation of the disturbance until its ensuing collapse). This, in turn, will cause a reduction of the frictional temperature buildup with the resultant decrease in the efficiency of flow noise emission. It is also shown that such early collapse of the disturbances may be induced by decreasing their linear scale. An illustrative application of these principles to the physical action of a multinozzle jet engine suppressor is made. It is shown that by forcing the jet exhaust to pass through a cluster of smaller nozzles, while keeping the velocity of efflux unchanged, the decreased scales of the disturbances induce a faster collapse, thus, decreasing the efficiency of flow noise emission. The device is also shown to shift the peaks of noise emission from lower to higher frequency ranges. The principles may be extended to other jet noise suppression devices which tend to “break up” the flow in the dissipative region.