Questions tagged [python]
Python is a high-level interpreted general programming language. Python has popular numerical and scientific libraries/packages, most notably numpy and scipy. The scipy.signal package is a powerful signal processing software collection. This tag covers the use of numpy, scipy, and other Python packages often used for SP computations.
1,372 questions
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Bispectrum analysis of signal
I am trying to compute the bispectrum of complex sinusoid signal.Here is the code and the result. Ideally the bispectrum amplitude should be zero, but it still shows some peak . Is it because I did ...
- reputation score 367
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Best image-processing protocol/process/steps to isolate single samples from picture of overlapping samples
I have this image:
and would like to count the number and lenghts of the samples/objects in it.
I tried different approaches, but the main issue so far (other than calculate collinear fragments of ...
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Simple symbol timing synchronizer prototype
I'm learning about symbol synchronization and in order to experiment I've created a simple Python implementation. Seems to be working:
but I want to make sure it's not a coincidence and ask about ...
- reputation score 11
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Why does the inverse Fourier transform return complex data?
My understanding is super basic, but as I understand it, the FFT takes in data in the time domain (amplitude over time) and returns complex data in the frequency domain (magnitude over frequency).
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Confusion about energy preservation during griffin lim phase estimation
Currently I am trying to use griffin lim algorithm to generate waveform data from magnitude spectrogram input. In general everything works fine. However, I do not fully understand the effect of ...
- reputation score 392
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Is it feasible to recover musical structure from EEG imagination data?
I am new to DSP, and I am currently working on a project whose full details I cannot disclose yet. Broadly speaking, the goal is to study the relationship between EEG signals and musical structure ...
- reputation score 11
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Interpreting EEG spectrogram artifacts: Constant horizontal bands and periodic vertical lines after filtering
I am analyzing EEG data (CHB-MIT Scalp EEG) and generating spectrograms to visualize seizure transitions. I am trying to understand specific artifacts visible in my output to ensure my preprocessing ...
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Why does Python skimage.transform.resize give different results from MATLAB imresize for the same array?
I'm trying to replicate MATLAB's imresize behavior in Python using skimage.transform.resize. Here's my test case:
Python
...
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Deadlock issues with simultaneous USRP RX / TX using UHD Python API
I'm trying to set up simultaneous RX and TX using the two front-ends on a USRP B210 using the UHD Python API. This resource recommends using separate threads for RX and TX, and this one says that UHD ...
- reputation score 143
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How do I generate proper QAM-M modulated passband and save it as WAV file?
I'm new to digital signal processing and would like to know how to make a QAM-M modem that generates proper passband signal and saves it as a WAV file.
The tool should allow me to specify the carrier ...
- reputation score 11
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Why use Butterworth filter after MediaPipe smoothing (One-Euro) for pose landmarks?
I'm working on human pose estimation using MediaPipe (Pose or Face Mesh), which applies a LandmarkSmoothing filter (One-Euro style) to stabilize landmarks in real-time.
However, for offline post-...
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How to detect repeating patterns in short audio clips (≈4 seconds) using Python and machine learning?
I’m working on a machine learning project where I need to classify very short audio clips (about 4 seconds each) into two categories:
repeating song: clips that contain a repeating musical pattern.
...
- reputation score 99
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Why FFT input has to be centered at x[0] from a algorithmic/mathematical point of view?
I am a beginner in FFT and, however, for my project, I have to process the autocovariance function and turn it into a spectral density. I am using Python for the calculations. If I center the ...
- reputation score 131
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Help with Implementation of Extended Target Tracking via EKF and inverse-Wishart updates
I am trying to implement the research paper linked here: Converted Measurements Random Matrix Approach
to Extended Target Tracking Using X-band Marine
Radar Data
I’ve managed to code the prediction ...
- reputation score 21
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Is my Autocorrelation Function up to Par?
I am using python to play around with my own implementation of the ACF. I am aware of how the autocorrelation function can have quantization error due to integer values of lag being used to calculate ...
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