> The delta-peak contains all frequencies phase-aligned while white noise
> contains all frequencies with random phase, right?
Nope, I don't think so. You can't even compare it. A dirac impulse is a signal
with a bounded energy (which is 1), whereas "white noise" refers to a
*stochastic process* that creates signals of unbounded energy. So "white
noise" refers to the *characteristics* of a random signal, "delta-peak" to a
specific signal.
The autocorrelation function of white noise is a dirac impulse and therefore
with Wiener–Khinchin its power spectrum density (fourier transform of the
autocorrelation function) is equal for all frequencies. Since the
autocorrelation function is always symmetric, its fourier transform is a
*real* function and actually the psd does not even know about phases.
-- GnuPG: https://www1.inf.tu-dresden.de/~s3418892/micuintus.asc Fingerprint: 1A15 A480 1F8B 07F6 9D12 3426 CEFE 7455 E4CB 4E80 <<</>> https://wiki.c3d2.de/Benutzer:Micuintus https://wiki.vorratsdatenspeicherung.de/Benutzer:Micuintus _______________________________________________ Linux-audio-dev mailing list Linux-audio-dev@lists.linuxaudio.org http://lists.linuxaudio.org/mailman/listinfo/linux-audio-devReceived on Thu Aug 21 04:15:03 2008
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