Sampling at 4ms intervals What is the Nyquist frequency • In absence of anti-alias filtering, at what frequency would noise at 200 Hz be aliased back into the Nyquistinterval?

In Chapter 4, we used the time constant to characterize first-order RC circuits. Find the relationship between the half-power frequency and the time constant.

(b) High-frequency ECG biopotentials analysis in the ST-T segment of a high-resolution ECG signal recording requires the analysis of signal components above 30 Ilz and below 800 Hz. Design a first order band pass passive filter to accommodate this specified frequency bandwidth. Sketch the circuit configuration. You may use an op- amp buffer stage in your circuit design.

7-18 Abasehand signal having components from near de to 8 kHz is used to frequency modulate a high-frequency carrier, and the maximum frequency deviation is set al +12 kHz. Delermine the approximatle transmission bandwidth.