Questions tagged [array-signal-processing]
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0
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0answers
4 views
Understanding of beam mask
I am reading an article An Overview of Signal Processing Techniquesfor Millimeter Wave MIMO Systems, and found some expression (p 11):
The channel power is concentrated in a low-dimensional sub-...
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0answers
28 views
How to crop a song and mantain the same values in the sample vector?
Does anyone know how can I crop an audio signal and maintain the same values in the sample vector?
I am working on a audio signal processing project for song recognition in Python and I wanted to ...
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0answers
11 views
Blind source separation from microphone array
I was following this article and I wanted to "borrow" their Idea for my own work.
The difference is that I am using a microphone tetrahedral array and not a binaural microphone. I have two different ...
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2answers
61 views
Convolution property
Is the convolution of two equal signals the same signal?
I have this system:
and i have to find $h_1[n]$ (which i've been struggling for a while), given
$$ h_2[n] = u[n] - u[n-2] $$
and $h[n] = ...
1
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0answers
57 views
Real time signal smoothing / high pass filter
I am attempting to effectively high-pass a signal sampled in real time at 10kHz, to remove frequency components <= 1 Hz with minimal distortion (due to phase/group delay) of the signal components >...
3
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5answers
479 views
Multi-channel audio upsampling interpolation
I have a four-channel audio signal from a microphone tetrahedral array. I wish to upsample it from 48 kHz to 240 kHz.
Is there a preferred interpolation method for audio? Does cubic ...
2
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2answers
141 views
Tetrahedral microphone array beamforming
I have a microphone array of 4 channels taken as channels [6,10,22,26] from Eigenmike spherical microphone array. I wish to do 3D beamforming and create $8\times 4$ beams, 4-elevations with 8 ...
0
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2answers
69 views
Delay in Savitzky-Golay filtering
I am applying a Savitzky-Golay filter to a signal, using the scipy function.
I need to calculate the lag of the filtered signal, and how much is it behind the original signal.
Could someone shed ...
1
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1answer
30 views
By using array antenna and a MUSIC algorithm, how many targets could be detected?
By using an array antenna which has N receivers, How many targets could be detected and classified when we use the MUSIC(MUltiple SIgnal Classification) algorithm?
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0answers
83 views
Spatial smoothing - 2D MUSIC [FMCW MIMO radar processing]
I'm using a 2D Music algorithm for the estimation of Range-Azimuth info in a ULA FMCW MIMO radar. The algorithm procedure is pretty simple as per Belfiori F., Application of 2D MUSIC Algorithm to ...
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0answers
32 views
Space-time filtering vs. beamforming
Say I have a dense linear array of sensors in space and an acoustic signal propagating through them.
In this case, how would delay-and-sum beamforming compare to space-time filtering by masking the ...
1
vote
1answer
17 views
Feature normalization (scaling) for Hyperspectral images
have been straggling with the concept of feature normalization for the hyperspectral images. Respect to my problem I have attached a picture of my problem which clearly stands the issue which I have.
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0answers
28 views
Phase estimation in Beamforming
If I have a modulated signal $A\cos(2\pi f c t + \phi)$, I can demodulate it using IQ demodulator and estimate the phase using I and Q channel information. When it comes to MIMO case (specifically ...
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0answers
33 views
Excluding points too close to a set of coordinates
I was wondering if anyone can help me. My ultimate aim is to take an image like the one shown and draw line between the white and black blobs that show a direction and output the coordinates in the ...
1
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1answer
63 views
Separating two frequency component
How can we separate two frequency component when they get mixed means when signal get mixed with noise how receiver can judge which part is signal and which is noise ?
0
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1answer
30 views
How to make sinewives with array input, for-loop functions and operate array with others [matlab]? [closed]
Thanks to previous question, I got some clues to resolve this one.
But, I still get some problems here.
...
1
vote
0answers
230 views
Time-Delay beamforming delay computation
I'm trying to implement a beamforming algorithm in python and I'm stuck with the time-delay computation for a rectangular array.
I'm using the following equation to compute the delays based on the ...
-1
votes
1answer
95 views
Calculation of Correlation Matrix
In the description of any Beamforming Technique for microphone array signal processing there is a usage of the co-relation matrix.
What is the use of calculating such a co-relation matrix in such ...
9
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3answers
370 views
Practical wideband digital beamforming for large arrays in radar applications
I do understand the mathematics behind digital beamforming but I am not sure how such systems are practically implemented. For example, in a typical wideband FMCW radar operating in S-band, the (...
