A sine wave is an infinite [no starting point or ending point, just infinite steady-state both ways], like any finite-bandwidth signal. You can never have a signal that is finite in time and bandwidth at the same time. Any finite-length (time-limited) signal has theoretically unlimited bandwidth. What you can increase the spectral roll-off for the side-bands by smoothing the time-domain signal, but whatever "resolution" you gain in one domain, you lose in the other domain.camsr wrote:So a sine wave is only a resultant behavior of some other kind of energy input then.mystran wrote:You can't have it, because the sidebands and the fast response are the exact same thing just viewed in two different domains.camsr wrote: I suppose I am looking for the most "natural" way to develop a sine with the least sideband and fastest response.
It sucks, but that's the way it works.