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# Tag Info

### Removing DC bias

I suspect the waveform is already down-converted to be a complex baseband signal, yet the plot has the carrier frequency arbitrarily added. Instead of doing the following: ...
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### Can Autocorrelation be used to Differentiate Signal Quality (High, Medium, Low, Very Low) for Periodic Signals?

An alternative to the comb filters is to determine the period, chop up the signal into individual cycles, determine the average cycle and than simply subtract it out. Whatever is left is the noise. As ...
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### Can Autocorrelation be used to Differentiate Signal Quality (High, Medium, Low, Very Low) for Periodic Signals?

So "quality" means less noise? And the signal is periodic? Would the period be an integer number of samples? Some form of autocorrelation can be used for pitch detection. And, once you ...

### Sawtooth wave Fourier coefficients

For anyone else visiting this question trying to solve for coefficients, I just had something complex like:  \begin{align} a_k &= \frac{1}{T_0} \int^{T_0}_0 x(t) e^{-j2\pi f_0 k t}\,\, dt\\ &...

### Is it possible to find the FFT of a 1024-point signal by taking 8-input points at a time and calculating the FFT of those 8-points until the end?

There is a divide and conquer approach to computing the FFT detailed in this PDF. Here is an implementation as in section 8.1 ...
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1 vote

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