Top new questions this week: |
I know that absolute integrability of a signal is a sufficient condition for the existence of Fourier transform but I'd like to knowIs the existence of Fourier transform sufficient for the absolute ... |
The linear map $\mathcal{A}(\cdot)$ is said to have RIP (restricted isometry property) with a restricted isometric constant ${\delta\in [0,1)}$ if it has the following property:\begin{equation}\label{... |
Greatest hits from previous weeks: |
I read in some places that music is mostly sampled at 44.1 kHz whereas we can only hear up to 20 kHz. Why is it? |
This has been one of the holes in my cheddar cheese block of understanding DSP, so what is the physical interpretation of having a negative frequency?If you have a physical tone at some frequency ... |
What is the significance of the noise covariance matrices in the Kalman Filter framework? I am referring to:process noise covariance matrix Q, and measurement noise covariance matrix Rat any time ... |
What is the difference between feature detectors and feature descriptors? Which among these are detectors and which are descriptors: Harris, SURF, Min Eigen, FAST, SIFT, BRISK |
Over on the TeX stackexchange, we have been discussing how to detect "rivers" in paragraphs in this question. In this context, rivers are bands of white space that result from accidental alignment ... |
Welch's method has been my go-to algorithm for computing power spectral density (PSD) of evenly-sampled timeseries. I noticed that there are many other methods for computing PSD. For example, in ... |
According to Wikipedia, The sine wave or sinusoid is a mathematical function that describes a smooth repetitive oscillation.The formula for the Sine wave is,A = Amplitude of the Waveω = the ... |
