| 摘要 |
An indoor noise pollution automatic identification and monitoring system comprising: an FPGA multichannel microphone array for sampling a noise signal; and a digital signal processor (DSP) for preprocessing, feature extraction, and feature selection of the noise signal and establishing in a cloud a feature model for the noise signal. By means of a technique matching the feature model for the noise signal, a noise source and corresponding noise monitoring information are identified, and finally, the noise identification information is displayed on a main interface in the form of a chart. The system effectively makes a user aware of the hazards of noise pollution and reminds the user to stay away from noise hazards and to actively take up preventive measures, thus improving the living environment. |
