In some contexts, all the rounding methods above may be unsatisfactory. For example, suppose that "y" is an accurate measurement of an audio signal, which is being rounded to an integer "q" in order to reduce the storage or transmission costs. If "y" changes slowly with time, any of the rounding method above will result in "q" being completely constant for long intervals, separated by sudden jumps of ±1. When the "q" signal is played back, these steps will be heard as a very disagreeable noise, and any variations of the original signal between two integer values will be completely lost. 