The middle region applies whenever the envelope of the noise can move significantly during the integration time, but not so rapidly that individual sample points become uncorrelated. In this case, the integration behaves as a noise filter with frequency response of sin (π tINT ) and an equivalen...
Therefore, TSA works like a comb filter with main lobes centered around integer multiples of the fundamental frequency. It is easy to find that the periodic components are unchanged, while the nonsynchronous components and noise are attenuated. Figure 1 Frequency response of TSA Full size image An...
A new filter for the purpose of restoring an MR image from noise-contaminated ones is proposed. The filter is an extension of a non-linear filter, known as K-nearest neighbor averaging filter (KF). In the KF, the filter parameter k is constant over the whole image. In the proposed meth...
However, the receiver IF bandwidth might be significantly larger than the pulse repetition frequency. Such is the case with broadband signals, where many spectral components exist in the filter’s passband. Importantly, the maximum RMS value of the filter’s transient impulse response is proportional...
frequency points corresponding to the preamble in the frequency domain, compare the calculated averages to an expected frequency response in the frequency domain, determine a correction filter to apply to the data based on the comparison, apply the correction filter on the data in the frequency ...
An adaptive ARMA four-line lattice filter for spectral estimation with frequency weighting Using a suitable frequency-weighting function, denoted as an ARMA (autoregressive moving-average) model, an estimated spectrum is obtained by arbitrarily ... M Haseyama,N Nagai - 《IEEE Transactions on Signal...
Antagonistic comparison of temporal frequency filter outputs as a basis for speed perception Vision Research, 34 (1994), pp. 253-265 View PDFView articleView in ScopusGoogle Scholar Smith et al., 1999 A.T Smith, W Curran, O.J Braddick What motion distributions yield global transparency and ...
The modified technique converges faster compared to baseline system to obtain the optimum filter coefficients. The proposed method has improved the perceptual estimation of quality of speech by 17.05%, 33.92%, 14.96%, and 39.13% at 5 dB SNR for babble, car, airport and exhibition noises ...
The signal goes through a band-pass filter and then to the high speed zero- crossing comparator based on chip MAX999 (Maxim Integrated Products). The PCB of the comparator is carefully designed to reduce the high frequency electrical noise. For simplicity the magnetic shielding, AOM, and coils...
In terms of FIG. 1, the output 71 or pulse train 66 is processed through the filter 72 to reproduce the information signal at an output 73 by averaging the constant current pulses 68 in the train 66. As may be visualized from FIG. 2, variations in the threshold reference voltage 63 man...