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This document discusses preprocessing techniques for quantization in analog-to-digital conversion. It explains that speech is a random signal that may exceed the input range of a quantizer without preprocessing. To address this, mean removal and variance normalization techniques are used. Mean removal estimates and subtracts the local mean from the signal to center it around zero. Variance normalization estimates the signal variance and adjusts the amplitude using a variable gain amplifier to bring it withi

Author

aakulapichaiah

Language

EN