Talk:Frequency domain

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[edit] Frequency space

Frequency space redirects here. When I think of "frequency space", though, I think more of a time-frequency transform, like the STFT. - Omegatron 14:43, Apr 19, 2005 (UTC)

"Frequency domain is a term used to describe the analysis of mathematical functions with respect to frequency."

=> The Frequency Domain is used to understand the frequency content of mathematical functions and measured data.

[edit] Momentum space

Momentum space also redirects here, but there isn't any discussion of it. Fresheneesz 23:37, 30 April 2006 (UTC)

Yeah, why is that? It dosn't seem to make any sense when comming from [Wavefunction] What the hell does the frequency domain have to do with momentum space? Chad Okere

Momentum space is the Fourier transform of the wavefunction in position space. It's an analogous relationship to time and frequency, but if it's not discussed here it shouldn't be linked here. Dicklyon 05:14, 19 June 2006 (UTC)

Momentum space is more of a physics concept used to explain Fermi energy levels, which uses wave function vectors that can also be called reciprocal lattice vectors in condensed matter physics. However I wish either separate articles are made for each of these definitions or that it be addressed that they are all basically the same concept.--Waxsin (talk) 03:06, 6 December 2007 (UTC)

[edit] Example graphs?

Would be nice to see some graphs of examples of frequency and time domain functions. For example, a graph of a sound in each space. --jivy 18:53, 8 June 2006 (UTC)