Learn how to say Quantize correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word quantize:
1 Physics form into quanta, in particular restrict the number of possible values of (a quantity) or states of (a system) so that certain variables can assume only certain discrete magnitudes:
light is quantized into packets of energy
2 Electronics approximate (a continuously varying signal) by one whose amplitude is restricted to a prescribed set of values:
distortion is caused when very low-level audio signals are quantized
quantize (sense 2).