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# Questions tagged [multi-channel]

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1 vote
29 views

### How to Isolate a Common Biopotential Signal from Dual Sensor Readings with Different Motion Artifacts?

I am a beginner in signal processing and working on a problem involving a dual biopotential (ECG) sensor setup. One sensor uses dry galvanic contact, and the other uses capacitive non-contact sensing. ...
34 views

### Resampling n timeseries datasets with different sampling frequencies

I am currently working on an IoT project that uses datasets from different sensors with differing sample rates fs = (1s, 30s,...). I combine this with API data <...
21 views

2k views

### Real-time delay between signals

I currently have a real-time noise suppression algorithm based on two inputs from different microphones. It has passed most tests that I have thrown at it, however when the signal I am trying to ...
1 vote
67 views

### Dividing a signal in channels

I have a signal in time domain, and I have to convert it into frequency domain and divide it into 100 channels, and find the center frequency of each channel. I am not good in "MATLAB" so how to do ...
• 11
448 views

### Changepoint Detection of a 2D signal

Consider the 2D signal below I would like to find the changepoints in the signal (using a hierarchical approach). Based on our visual observation, we can see there are 2 main changepoints where the ...
• 351
32 views

### Can someone help me with ETSI/BRAN Indoor wireless channel specification and implementation in MATLAB

I want to implement ETSI/BRAN Indoor Model A channel, i have the delays for the paths tau=[0 10 20 30 40 50 60 70 80 90 110 140 170 200 240 290 340 390]*10^(-9); and the Average Relative Power (dB) ...
10k views

### Hermitian symmetry in OFDM systems

I am trying to understand the usage of Hermitian symmetry in OFDM systems and have a couple of questions regarding this. What is the reason of using the Hermitian symmetry in OFDM? How can we arrange ...
• 635
1 vote
108 views

### Finding the best principle component

The title might be unclear, but the problem is this. I have a signal sampled 1500 times with a rate of 60/s, and a sensor array 512 units large. There is a lot of noise, echo and other frequencies ...
• 13