Questions tagged [analog]

The tag has no usage guidance.

64 questions
439 views

Approximate the magnitude response of an analog filter with a digital filter, starting from its gain expression

I have an analog filter with its frequency response curve in dB described by the following expression: $$N_{dB}=20log_{10}\omega t_1 \sqrt{\frac{1+(\omega t_2)^2}{1+(\omega t_1)^2}}$$ This ...
118 views

Signal and Space/Time

I have been reading a couple of definitions on signal such as: Any quantity measurable through time over space or any higher dimension can be taken as a signal. And this, In the physical ...
359 views

How do I normalize accelerometer signals values to an relative scale?

Different smartphone devices have accelerometers manufactured by different manufacturers. Say I want to categorize vibrations recieved from various devices into one of the following scales : ...
159 views

Proof-of-concept for active noise cancellation to block consistent low-frequency HVAC noise transmission

Background We live in a multi-unit building where each unit's HVAC system/closet is located directly across a party-wall from the neighboring unit's bedroom, and adjacent to a shared external curtain ...
68 views

confusion between frequency and amplitude in digital to analog and vice versa conversion

bandwidth is defined as the difference between the highest frequency and lowest frequency. amplitude is the distance between the, let's call it a crest and a trough, in a wave. cycle is the time per ...
63 views

Signals sampling

I have a simple question, but sadly I'm kind of "noob" in signals theory. A signal having 4 harmonics at the following frequencies: 1 kHz, 2 kHz, 3.5kHz and 4.2 kHz. (How can a signal have harmonics "...