To monitor environment noise

are try to design an intelligent noise monitoring system which can measure

store

calculate and analyze the common noise rating quantity

such as LN

Leq

Lnp

TNI

Ldn

SD and so on.The design proposal

block diagram and the software flow pattern are written in this paper

which also focus on the design and realization of the main hardware circuit and the functions of software.At the same time

the experiment proves that the instrument works well and achieves the expected design objectiv...