On Wed, Dec 5, 2018 at 11:12 PM [email protected] <[email protected]> wrote: > if you need the frequency, amplitude and phase of a sampled sine wave > there is a solution without correlation, nonlinear fit or interpolation > in the frequency domain. It works with damped sine waves as well. > > You just have to solve a linear system of equations.
A similar linerization can be used in an iterative manner to also solve for first and higher order amplitude modulation as well as frequency modulation: https://people.xiph.org/~xiphmont/demo/ghost/demo3.xhtml Also relevant is https://github.com/stevengj/harminv/blob/master/README.md though generally less flexible than the ghost chirp code. What I've never known is how to characterize the statistics of these kinds of matchers. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
