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The algorithm of lock-in-amplifier adaptive noise canceller is a method of eliminating the power-line interference, which is based on the lock-in amplifier in the hardware circuits. It could be used to calculate the amplitude, frequency and phase of the interference signals accurately. And the de-noised signals will be obtained by subtracting the reconstructed interference signals from the original...
A high noisy environment severely contaminates the ECG signal. In this paper, the use of a wavelet transform domain filtering technique as an adaptive de-noising tool, implemented in ECG signal analysis, is presented. The multi-resolution representations of the signal, produced by wavelet transform (WT), are used for signal structure extraction. Experimental results have shown that the implementation...
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