Hugh Lachlan Kennedy

11 Questions 191 Answers 0 Followers

Questions related from Hugh Lachlan Kennedy

Does bed rest really help when you have influenza?

Or is it just something you do because you don't feel like being active and so you don't infect others?

06 June 2016 5,228 1 View

Are Bode and Nyquist diagrams useful tools for digital controller analysis and design?

I have been using both (Bode and Nyquist diagrams) to design simple digital feedback controllers for low-order SISO systems P(z), by analysing the loop transfer function L(z) = P(z)*C(z). But I am...

01 January 2016 6,740 5 View

Why are equiripple (digital) filter designs generally preferred over error-minimized designs?

1) Does this have something to do with aesthetics? Because engineers like the relative uniformity of an equiripple response, as opposed to the more 'organic' response of other methods. 2) Is it...

10 October 2015 7,523 4 View

Could you please help me with equiripple FIR filter design?

I would like to design a low-pass equiripple FIR filter, but I would also like to specify the (desired) group delay in the pass band; I would like to make this as low as feasibly possible, while...

10 October 2015 8,837 18 View

Does anyone have experience using Least-Mean-Squares (LMS), or some other recursive technique, for the estimation of a sinusoid's parameters?

I would like to estimate the frequency of a discrete-time (real) sinusoidal tone - with unknown amplitude, frequency and phase - in noise An LMS-type technique looks promising, for...

09 September 2015 3,994 6 View

What are the main classes of techniques to estimate the time delay between (or cross correlate) two digital signals/channels?

I would say there are essentially two main groups or categories of techniques that are commonly used to do this ... 1) Time domain e.g. a) normalized or 'regular' cross-correlation b) sum of...

08 August 2015 9,331 3 View

Why do people find the idea of interpreting quantum mechanical wavefunctions using classical trajectories so objectionable?

20 years ago I came to grips with quantum mechanics and Schrodinger’s wave equation through what I thought were fairly unconventional means. Whenever I talked or wrote about this I was treated...

04 April 2015 4,177 1 View

Are the discrete Laguerre polynomials unique?

I have been using the Gram–Schmidt procedure to generate the discrete Laguerre polynomials, over the domain m = 0 ... +Inf, using an exponentially decaying weighting function w(m) = exp(sig*m),...

03 March 2015 7,115 3 View

Is there an automatic tool to determine the arithmetic complexity of a Simulink circuit?

I have several large discrete-time Simulink models, built from fairy simple components, with vector/matrix ops, and I would like to quantify and compare their arithmetic complexity (e.g. the...

02 February 2015 1,981 2 View

What is your preferred/favourite method for designing digital low-pass filters (1-D, FIR or IIR, causal, low order, configurable delay)?

Low-Pass Filter Design (Digital Signal Processing).

10 October 2014 3,959 16 View

Is this CUDA implementation of separable convolution optimal?

I have been looking at the "convolutionSeparable" code sample provided with CUDA 7.5, for the implementation of a 2-D FIR filter for image processing. The rationale behind the design is discussed...

01 January 1970 8,164 3 View