* Roman Haefeli <reduz...@gmail.com> [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.
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