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Results tagged with dsp
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user 659
DSP stands for Digital Signal Processing or Digital Signal Processor.
13
votes
Why does rectification of a digital signal double the frequency content?
Rectification is a non-linear process so it can change the spectrum of a signal.
Full-wave rectification gives mostly DC and double the base frequency but not only. There are higher harmonics in this …
- 5,332
14
votes
What is the relation between FFT length and frequency resolution?
Basic FFT resolution is \$f_s \over N\$, where \$f_s\$ is the sampling frequency.
The ability to differentiate two very closely spaced signals depends strongly on relative amplitudes and the windowin …
- 5,332
5
votes
Why does radar processing always require FIR filters?
It is a great book about DSP with lots of practice and not too much theory. …
- 5,332