Experiment analysis and comparison indicate that the wavelet threshold-value filter can effectively eliminate the FOG noise, and its anti-noise effect is better than that of classical digital low-pass filter.

To recover the biomedical electric signals,the modulated carrier signals sampled are demodulated by software and filtered by digital low-pass filter,and then the goal of acquiring and showing biomedical electric signals can be arrived.

The key of active power filter harmonic detection is the design of digital low-pass filter.

The design of digital low-pass filter is the key in the harmonic detection of active power filter.

AC Electric Parameter Measuring System Digital Sampling Method Realized with Digital Lowpass Filter;

The components of the output signal of the accelerometer are presented briefly in this paper , and a digital lowpass filter based on Chebyshev Type I is successfully designed to process in real-time the signal that was collected from a certain accelerometer of quartz.

Design of digital low pass filter in harmonic detection based on I_p-I_q transformation and its implementation using DSP;

By using MATLAB signal and using window method, frequency sampling and Chebyshev approximation the design of low pass digital filter in the toolbox have been processed.

Using FIR(Finite Impulse Response) lowpass digital filters based on window functions,the authors conducted experimental researches on the filtering of airborne gravity data,and obtained some useful results.