FFT of signal data with windowing, overlapping and averaging

1. What is overlap in FFT?
2. Why do we use overlap in FFT?
3. What is overlapping in signal processing?
4. What is a 50% overlapping technique?

What is overlap in FFT?

FFT convolution uses the overlap-add method together with the Fast Fourier Transform, allowing signals to be convolved by multiplying their frequency spectra. For filter kernels longer than about 64 points, FFT convolution is faster than standard convolution, while producing exactly the same result.

Why do we use overlap in FFT?

FFT processing can be particularly problematic when the signal consists of randomly occurring transients superimposed on a more continuous signal. Overlap processing is commonly used in this situation to improve the estimates.

What is overlapping in signal processing?

Overlapping of signals happens when signals from two or more than two origins are broadcast at an equal frequency.

What is a 50% overlapping technique?

A technique utilized while applying a polish or protection where each pass overlaps the previous pass by 50% to ensure thorough application.