ARRANJO DE CODIFICACAO PCM

摘要

A p.c.m. encoder comprises a high accuracy linear A/D converter followed by a digital high pass filter, a d.c. offset circuit and an optional digital compressor. The high pass filter removes any d.c. offset from the encoded signal and the offset circuit then reintroduces a controlled amount of d.c. offset. By this means the performance can be improved especially in regard to idle noise and crosstalk enhancement.