Howtosignalprocessing
- What is noise whitening filter?
- What is whitening in rf?
- What is whitening noise?
- What does whitening a signal mean?
What is noise whitening filter?
The noise whitening module equalizes the spectrum of the signal, making it similar to the white noise spectrum. Noise whitening module works similarly to the automatic filter that enhances low level spectral components and attenuates high level ones.
What is whitening in rf?
3 Principle of data whitening
In an RF system, transmitted data is grouped into packets. These packets may contain long sequences of 0's and 1's which can introduce a DC bias into the transmitted signal. A radio signal with a DC bias will have a non-uniform power distribution over the occupied channel bandwidth.
What is whitening noise?
White noise refers to a noise that contains all frequencies across the spectrum of audible sound in equal measure. Because white noise spans multiple bands of sound, it is sometimes referred to as broadband noise. Anecdotally, people often liken white noise to the static that comes from an untuned radio or television.
What does whitening a signal mean?
The whitening process is often used for ambient vibration data before stacking waveforms for cross-correlation. The process is simple as Fourier transforming the signal after applying Hann window, then normalizing its magnitude, and then inverse Fourier transforming it.
