The psd tag has no wiki summary.
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2answers
173 views
PSD (Power spectral density) explanation
I'm trying to understand how the PSD is calculated. I've looked in a few of my Communication Engineering textbooks but to no avail. I've also looked online. Wikipedia seems to have the best ...
2
votes
1answer
79 views
Guitar String Replucks
I'm analyzing guitar string plucks and sustains. I'm having good success with auto correlation using FFT's. Now I'd like to detect plucks while the string is still vibrating. Since I already am ...
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0answers
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Getting sound pressure level (SPL) for a frequency band from Welch's derived PSD
I'm using Welch's method (pwelch, in octave) to get the PSD of a recorded sound signal (i.e. pressure level vs. time). I then took the PSD data and took the sum of the amplitude in each octave band ...
2
votes
1answer
146 views
Working backwards from PSD to possible signal
I have been trying to reconstruct a random signal from its PSD and am running into trouble. I know that many different signals in the time or spatial domains can result in the same PSD-- I am ...
2
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1answer
188 views
Producing Colored Noise from a given PSD Data
I need to estimate (extract/produce) the colored noise of a given PSD Data. I have the following procedure to get the desired results.
First of all I calculate the filter coefficiencts using firls ...
0
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2answers
140 views
PSD of Windowed signal
Suppose PSD of a signal $x(n)$ is $ PSD_{xx}(w)=1$.
Now if a window function w(n) of length $ 0\le n \le N-1$ is applied to $x(n)$. what will be the new PSD?
9
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1answer
362 views
What is the difference between PSD and squared magnitude of frequency spectrum?
The power spectrum of a signal can be calculated by taking the magnitude squared of its Fourier transform. Being an audio person, the signal of interest for me would be a time series.
How does this ...
8
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1answer
2k views
Difference between Power spectral density, spectral power and power ratios?
What 'exactly' is power spectral density for discrete signal? I was always under the assumption that taking the Fourier transform of the signal, and then the ratio of desired freq range magnitude over ...
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2answers
2k views
Why so many methods of computing PSD?
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 ...
