Note that if one samples a signal twice at frequencies whose ratio is not a rational number (say 1.0 and π), the first sample by itself would be unable to distinguish between DC and integer multiples of 1.0Hz, while the second could be unable to distinguish between DC and integer multiples of πHz.

Apr 22, 2011 · Frequency is the inverse of time for repeating events. If a single cycle of your mains is 1/50 of a second in duration (0.02 seconds), then there will be 50 cycles in a second (1 / 0.02).

Aug 9, 2021 · It is not possible to have a frequency of 0Hz. There is a categorical change when you go from approaching 0, to exactly 0. If something has a frequency, it’s better to think of it in terms of powers of ten, the frequency doesn’t go between 0 and infinity, it goes between 10 to the power of -infinity, and 10 to the power of +infinity.

Dec 20, 2014 · Transients are more difficult to categorize, but again it's a matter of timeframe. The average on the time window would give DC, and the rest AC. A Fourier transform is more strict, defining DC as 0Hz. Theoretically Fourier transforms are only for periodic signals, but one can assume any signal capture repeats itself and proceed. \$\endgroup\$

Jun 1, 2020 · And thinking that as a result you can choose any period since as long as it has an amplitude of zero there will always be zero oscillation? I would also disagree that the period of a constant signal is undefined (unless you consider infinite to be undefined). It is infinite which is the same as 0Hz. \$\endgroup\$ –

In other words, '0Hz' means this value is applied to the entire signal, ie. it is added (as an offset) to every sample. with audio that is generally undesirable (some algorithms don't like it), so if a particular recording or ADC converter produced an unwanted DC offset you can use a …

Jan 10, 2020 · bode plot, zero at 0Hz. Ask Question Asked 5 years, 2 months ago. Modified 5 years, 2 months ago. Viewed ...

Mar 16, 2021 · $\begingroup$ This looks more like the result of a kink in the input function, that is, the function is continuous, also as periodic continuation, but the derivative has a jump, most likely at the wrap-around.

A hertz is a cycle per second. Audio is compressed air, in some periodic way, so for 440hz for example, the compression change from fully compressed to fully decompressed 440 times per second.

Sep 21, 2017 · As you decrease the frequency the wavelength increases more and more. The reason why the is no lower limit is because it behaves like an asymptotic, as you approach 0 the wavelength will get disgustingly massive. And once you reach 0Hz the wavelength is technically infinitely long, which means the wave never end.