Cut off / corner frequency.
Thinking of a DAC, spiting, say 2000 values/sec and the associated LPF at the output:
According to what I've read up to now, the filter should have a (-3dB) cut off frequency of 2KHz.
My question: why from the beginning I accept to design with an atenuated output since my interest is to have the signal restored with the right level, that is with 0dB attenuation.
In other words, shouldn't I design for a corner frequency where my highest signal of interest is not attenuated at all?
I do not discard misunderstand things or plainly ignoring many.
Thinking of a DAC, spiting, say 2000 values/sec and the associated LPF at the output:
According to what I've read up to now, the filter should have a (-3dB) cut off frequency of 2KHz.
My question: why from the beginning I accept to design with an atenuated output since my interest is to have the signal restored with the right level, that is with 0dB attenuation.
In other words, shouldn't I design for a corner frequency where my highest signal of interest is not attenuated at all?
I do not discard misunderstand things or plainly ignoring many.
Last edited: