Research on noise impact of building environment based on FPGA high-performance algorithm

摘要

Noise impact is the most sounds are subjective evaluation, hearing, and can significantly affect human health and wellbeing. The effects of noise on the human body include hearing loss, impaired growth and development, overall tension, and sleep disturbance in children and adolescents, and decreased ability to the building environment safety. Although it is difficult to classify the specific effects of noise, noise affectless is also considered by many ecologists to be destroying or eliminating, and pollution plays an important role. FPGA (field -programmable gate array) is used to measure and estimate the instantaneous amplitude of environmental noise and uses advanced architecture for picking up noise-polluted audio signals. A high-performance algorithm refers to the number of arithmetic operations (multiplication, division, and addition) noise value are calculate the output value of a system. Memory Requirements Specifies the amount of memory needed to store system parameters, past input, output past, and any intermediate calculated values. The effect of limited accuracy means that the quantitative effect is inherent in the implementation of any digital system. High-performance algorithm technique for cancel the noise in the desired signal. Environmental noise must be correlated with the noise component of the audio signal in order to be positively correlated and effectively removed.