The Research and Implementation of ENS3000 Noise Monitoring System
PU Yun-min · Journal of Jimei University · 2015
The noise monitoring system needs to solve several problems,such as how to locate the massive monitoring data,how to collect the audio data and noise decibel synchronous. In ENS3000 system,the principle of noise audio frequency processing and coding algorithm was analyzed,including Discrete Cosine Transform and wavelet transform. The synchronous problem between the audio data and noise decibel was solved,the special storage format which separated the audio data was used to find item in massive data,and insure audio data across segments to be processed continually,the technology combined noise decibel and audio data simplify the signal input channel,and insure the audio data and noise decibel collected synchronous.For the system was setup outdoor,the problem of heat dissipating, waterproof and ingress protection was solved by double-layer structure and isolating design.