The past two articles (Part 1, Part 2) were concerned with the magnitude response of the amplitude-optimized Butterworth… Read the rest
I left off with the suggestion that a higher order filter could be used to ease attenuation limitations on amplitude measurements,… Read the rest
A continuous time signal such as that detected by a transducer will likely consist of a summation of sinusoidal functions… Read the rest
So .. I spent a lot of pages talking of filtering and the spectrum that results from the Fourier analysis of a time series. … Read the rest
Part 7 investigated signals of two frequencies with sinusoidal phase shift. For the most part, the sample frequency and… Read the rest
Consider a situation in which an airborne measurement platform travels in the x-direction while the measurement instrument… Read the rest
I left the last section with a moderately complex continuous-time waveform segment and a demonstration that a mathematically… Read the rest
To this point, I’ve been considering single-frequency sine waves but most signals consist of a “sum-of-sines”.… Read the rest
I left Part 3 indicating the Butterworth filter was superior in amplitude response and the Bessel in group delay response.… Read the rest