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Questions tagged [noise-cancellation]

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5 votes
1 answer

Noise Characterization

I am working on characterization of noise in an experimental signal from an accelerometer, mounted on a beam. Normally, white gaussian noise is considered by several researchers to add noise in the ...
ayisha nayyar's user avatar
5 votes
4 answers

Noise reduction using multiple recordings of the same signal

I have two (audio) recordings of one analog signal, I used two separate devices (smart-phones) recording from two different locations. Each recording device is pretty crappy, lot's of electrical hum ...
Reuben Crimp's user avatar
3 votes
1 answer

Real time background noise reduction or removal

I am trying to build a real time simple audio recognition that can recognize few keywords. Following this tensor flow tutorial i was able to train a simple neural network. Currently the signal flow ...
BhanuKiran's user avatar
3 votes
1 answer

Hardware requirements for ambient active noise cancallation system using adaptive LMS

Background I'm working on a hobby project to reduce ambient low-frequency noise generated from HVAC equipment within a small area of a room. The noise is predictable and concentrated between 55Hz and ...
rjacobs's user avatar
  • 211
2 votes
1 answer

Noise removal using adaptive noise cancellation algorithms in real time systems

I am newbie in signal processing. I want to remove noise from real time audio signal using adaptive noise cancellation(LMS&RLS) algorithms. I don't know how to choose reference signal(noise signal)...
Nandana's user avatar
  • 31
1 vote
1 answer

Can simple FIR/IIR filtering recover/estimate a signal plagued with low SNR white noise?

I'm trying to design a filter to restore the original signal from strong noise (low SNR). I have tried low pass FIR and it could work well as the amplitude of original signal is much higher than the ...
marcus zhang's user avatar
0 votes
0 answers

Tracking period of quasi-periodic transient type signal in strong non-stationary interference

Consider a desired (pink) signal as well as its observation in heavy, non-stationary interference (green, this is the desired signal plus interference). As seen in the plot, the interference can also ...
rhz's user avatar
  • 457