ANALOG-TO-DIGITAL CONVERSION The Pulse Code Modulation (PCM) Technique By Dr. Ernest Simo 2.0 Uniform and Non-Uniform Quantization Non-Uniform Quantization Speech signals are Non-Uniform: The amplitude is more likely to be close to zero than to be at a high level. So, it should be more suitable to use Non-Uniform quantizers with unequally spaced levels, than uniform quantizers. CODE: AN INTRODUCTION By Dr. Ernest Simo © 1999 DR. ERNEST SIMO - SPACE2000