Linked Questions
16 questions linked to/from Pink ($1/f$) pseudo-random noise generation
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noise synthesis arbitrary PSD
I have noise measurements for a circuit, in units of noise power (measured in Watts against a known load), per frequency bin.
For simulation purposes, I wish to synthesize noise with the same spectral ...
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2
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142
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Signal Spectrum Shaping
I am looking for methods/algorithms for signal spectrum shaping. Let's say we have a white Gaussian noise and want to have a desired power-spectral density. The first solution that comes to mind is ...
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What is best filter to get 1/f(^alpha) that is linear on a log(PSD) vs log(Frequency) plot
I have a white noise signal that I plot on a log(PSD) vs log(frequency) plot.
Now I want to filter that signal with several different filters to to get different alphas (0.5 to 3.0) in the 1/f^alpha ...
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1
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678
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Sampling Noise Given Power Spectral Density
I am trying to write a Monte Carlo physics simulation which involves, given a power spectral density, sampling rate, and total number of samples, generating noise with such a power spectral density. I ...
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Identification of a transfer function
Can you obtain a transfer function in frequency domain with a bode plot form given by this function:
$$ S=k_1 \sqrt{1+\frac{k_2}{f}} $$
I did not managed it because actually in the lowest part of ...
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A one-pole LPF (6 dB/oct) has a step response to $1/e$ amplitude of ${\tt time} = 1/(2 \pi f)$. What would the response time be of a 3 dB/oct filter?
I was instructed in another question here that if a one pole (6 dB/oct) low pass filter is fed a discontinuity (ie. going from 1 to 0) it will take ${\tt time} = \frac{1}{2\pi f}$ to reach $1/e$ ...
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How to simulate (in matlab or c) power spectrum of random brownian noise signal?
I have a semi random noise signal, it does have some periodicity however.
I can estimate the power spectrum (of the blue signal, I thought that it would be more clear, because white noise is flat, ...
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Is a "Spectral Tilt Filter" the best way to get an arbitrary slope and cutoff LPF?
I need an arbitrary slope audio LPF for which both the cutoff frequency and slope in dB/oct can be smoothly modulated in real time.
Is the "Spectral Tilt Filter" described by Julius Smith the correct ...
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3
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I often see here formula expressed in term of $z$. But what is $z$?
While searching resources for generating pink noise (and with your help in the comments and answers of other questions), I came to such kind of formula:
$$ H(z) = { .041 - .096z^{-1} + .051z^{-2} - ...
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Understanding Voss-McCartney pink noise generation algorithm
I'm implementing the Voss-McCartney pink noise generation algorithm.
If you follow the link above, you can read:
from James McCartney 2 Sep 1999 21:00:30 -0600:
The top end of the ...
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How exactly does one apply a Hanning Window for a spectral estimate?
PREAMBLE
I am a graduate student researching evolutionary ecology. My supervisor and I have been trying to learn how to simulate colored noise, discretely, by the $\frac{1}{f^\alpha}$ power law for $\...
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2
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How to design a variable slope highpass filter
I want to design some specific slope highpass filter to enhance speech; just like $1$ dB/octave, $2$ dB/octave and more. Is there a method to calculate the coefficients by specific slope?
3
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515
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IIR filters with variable roll-off
I have a filter design problem in which lowpass filters have to be designed with varying roll-off. E.g: 2.7 db/ocatve or 1.4 db/ocave. See picture below.
This is easy to achieve with a FIR filter, ...
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1
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729
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Voss algorithm and pink noise
the voss' algorithm generated a 1/f series. What does the series mean?
For example, we use three dice and the result sequence length is 8. Let's set the sequence is 8,15,6,9,14,10,9,7. Then what does ...
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how to create synthetic $1/f$ noise? [duplicate]
I am writing an app to work with synthetic time series data from a physics experiment. In our experiments we always have $1/f$ noise in our time series, but I haven't been able to find code/packages ...