Hi all, i have a quick question concerining sampling frequencies. I have the ADC of my microcontroller set up with the maximum sampling frequency of 15 kHz but the programme uses timer interrupts to fill an array with ADC values at a rate of around 2 kHz.
My question is if i were to design an anti aliasing filter for the system would i need to use the sampling frequency of the ADC or that of the timer interrupt system. Any help would be greatly appreciated. Thanks in advance.
filter should be designed to frequency of signal that you have to measure.by considering sampling theorm ,i think u have signal frequency of at least 1khz.then better to design for 1khz