* Roman Haefeli <[email protected]> [2018-12-13 13:52]: > On Thu, 2018-12-13 at 13:21 +0100, Peter P. wrote: > > * Roman Haefeli <[email protected]> [2018-12-13 11:58]: > > > Hey all > > > > > > I once read about a simple and robust way to perform latency > > > measurements with an audio signal. > > > > > > Explained in a few words, the test signal consists of a sweeping > > > sine > > > tone. The return signal ring-modulates the source signal and the > > > resulting signal consists of two frequencies, the sum ( f_src+f_ret > > > ) > > > and difference ( f_src - f_ret), while the lower frequency is > > > proportional to the latency and can be detected quite easily > > > with with > > > e.g. [sigmund~]. > > > > > > I have troubles finding the name of this algorithm and don't > > > remember > > > the original source. I would like to read more about it and > > > correctly > > > attribute the original author / inventor. > > > > See jack_delay on https://kokkinizita.linuxaudio.org/linuxaudio/ > > That's a different algorithm and probably much more precise. The one > I'm looking for is simpler (and I'd probably know how to implement it > in Pd).
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