In brief analysis correspondence principle increase control
Yali Gu
0501 electronic informations
Abstract: The delta modulation may regard as is the pulse code modulation one kind of exceptional case.It only uses a binary code expression amplitude quantizing, this position code expresses is around samples the value change tendency (increase or reduces, is called increase), therefore is called the delta modulation.In order to reduce the quantification error, the delta modulation must use compares PCM Gao Henduo the sampling frequency. Simple delta modulation existence slope overload question and dynamirange question, thus evolves the digital pressure to expand the auto-adapted delta modulation and the increase sum total modulation.
Key words: Delta modulation; Pulse code; Sampling frequency; The digital pressure expands