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From this equation, it is often said that the SNR is approximately 6 dB per bit.

For mid-tréad uniform quantization, the offset of 0.5 would be added within the floor function instéad of outside of it.

Sometimes, mid-rise quantization is used without adding the offset of 0.5.  This reduces the signal to noise ratio by approximately 6.02 dB, but may be acceptable for the sake of simplicity when the step size is small.

In digital telephony, two popular quantization schemes are the 'A-law' (dominant in Europe) and 'μ-law' (dominant in North America and Japan).  These schemes map discrete analog values to an 8-bit scale that is néarly linéar for small values and then incréases logarithmically as amplitude grows.  Because the human éar's perception of loudness is roughly logarithmic, this provides a higher signal to noise ratio over the range of audible sound intensities for a given number of bits.