Two-bit instantaneously adaptive delta modulation for p.c.m. encoding

摘要: A two-bit instantaneously adaptive delta modulator intended for application as the input stage of a code converter is presented. Its step adaptation algorithm derived from that used in high information modulation (HIDM). The improvement performance relative to HIDM system gained by its ability reduce overshoots and respond faster signal variations. hardware model allows comparison between these modulators described results measurements on narrow-band noise sinewave signals are Two possible structures generate p.c.m. conversion computer simulation presented one them.