i need some guidance with understanding frequency response characteristics.
i have the a signal A with is played on speakers and recorded via microphone which is signal B. then i apply a window function, shift both signals to frequency domain and analyze the magnitudes, but the peak for the most dominant frequency is not at nearly the same index. it jumps.
to do further analyzation of the signal my plan was to create the frequency response of my audio system, multiply my frequency domain signal A with the FR and the peaks should align.
am i roughly right with this?
if yes, additional question:
as my processing power is limited i want to analyze only a certain frequency band. what would be the best approach to generate an frequency response for a certain frequency band? and if i consider only a few frequencies, is it possible, that other frequencies outside my "scope" affect my observed ones and make my results unpredictable again?
thanks for any help in advance! cheers