[PD] dsp lowest frequency?

marius schebella marius.schebella at gmail.com
Tue May 8 18:12:01 CEST 2007

the lowest frequency you can measure is determined by the length of your 
tape measure. in fourier transformation your tape measure is a timewindow.
in theory there is no lowest frequency.

Bosko Milakovic wrote:
> Hi all!
> Maybe it's a stupid question but I was reading this 
> http://www.dspdimension.com/PDF/DftAPied.pdf and it confused me a bit. 
> Theoretically, if we have a sample rate at 1000Hz, the highest possible 
> pitch will be 500Hz. But is there an opposite limit? Is there a "lowest 
> possible pitch" for different sample rates? Is DC always there no matter 
> what SR is or the lowest frequency boundary is moving also?
> Bosko
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