[sdiy] ot: rotating speaker simulation or stupid approach

[Antti Huovilainen]

On Fri, 4 Jul 2003, Czech Martin wrote:

> The animation just shows, that it works as I said.
> What's happening? The source does not move continuously (how could it),
> but in little steps. Certaeinly it is not the same is if a single
> source would move, but the wavefront compression will be visible,
> lets call it weired Doppler then...

I think it's similar to what happens with digital audio (sampling without
lowpass filtering the input). If the distance between adjacent
speakers/taps/whatever is much smaller than the wavelength of sound, then
the system is close to the case of a moving speaker. As the distance
approaches zero the system approaches the ideal case of a moving speaker.

Antti

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