bsteinbach

4 ms·

1. 1.▲
   by bsteinbach 1y ago

   The power vs voltage thing I think comes from the historical connection of dB to sensing waves. Because you can change impedance to match any sensor, but power is conserved, power was just more often more important to discuss than voltage.
2. 2.▲
   by bsteinbach 2y ago

   In defense of sliding windows of time series, if not clustering, the principal components analysis of the matrix on page 1 is one robust way to extract a linear model for the system producing the time series. It's useful for finding fr
3. 3.▲
   by bsteinbach 3y ago

   Not only similar, it's identical to Newton Raphson in ideal arithmetic! The nth order product approximation for the reciprocal of d = 1 - x is y_n = product_{i=1}{n} (1 + x^{2^(i-1)}) = sum_{i=0}^{2^n - 1} x^i = (1 - x^(2 n)) / (1