Signal Processing Stack Exchange
Signal Processing Stack Exchange

Questions tagged [online-processing]

9 questions
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Is real-time signal processing possible under Windows?

This question is related to on How to decide what platform is best to implement real-time audio processing on?, but focusing on Windows. I'd like to be able to take input from a data acquisition board and process it (either through Matlab or a…
jonsca
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Filtering a digital signal online in real-time using python

I am currently trying to apply a bandpass filter to a signal in real-time. There are samples coming in with a constant sampling rate and i would like to calculate the corresponding bandpass filtered signal. What would be the best way to do this? Do…
BStadlbauer
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2 answers

Online DFT Algorithm

I have a discrete audio stream $x$ that needs to be processed in real-time. Specifically, as the each new sample is received, I would like to compute a Fourier transform of the last $n$ samples of the signal. So, for example, upon receiving the…
jon_simon
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2 answers

detect and distinguish driving maneuvers via smartphone sensors

I want to do some driving style analysis via smartphone. Therefore, I programmed an app that records a 2D acceleration (when accelerating/braking and turning left/right). The app calibrates itself in a way that the initial misalignment between the…
R. Doe
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Web Online tools for feature detection methods in image processing

I'm doing a research about image processing, I would like to access common feature detection methods online, ex: Blob detection: Laplacian of Gaussian (LoG), Difference of Gaussians (DoG), Determinant of Hessian (DoH), Hough transform. Edge…
Jubba Smail
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Estimate process error for Kalman filter on financial data

I'd like to apply a Kalman filter, using Octave, to financial data but due to the nature of the data it will be difficult to impossible to specific the process error in advance of applying the filter. Can anyone suggest a way to specify the process…
babelproofreader
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Are there any recursive online max/min filters for time-series

Are there any online recursive filters that can approximate local, time-varying minimum and maximum values of a time series?
Jase
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Non Linear Recursive / Online Least Squares

I am searching for a recursive or online non linear least squares algorithm. I want to spread the computation out as new data is sampled like in the linear Recursive Least Squares or the LMS. Ideally a recursive Levenberg–Marquardt algorithim would…
stretch
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Optimize online weighted kurtosis algorithm

I am currently working on a Simulink block designed to perform an online computation of the weighted kurtosis typical of a certain signal. This block is part of a larger control algorithm, which will then be compiled as a DLL and run in both…
fpe
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