Howtosignalprocessing
What is DC removal?
Remove DC Offset allows you to remove any DC offset in the audio selection. If your audio signal contains too large a component of direct current, you may notice that it is not centered around the zero level axis. This is called DC offset.
What is a DC blocking filter?
A DC blocking filter is a overall high-pass filter with a very low frequency transition frequency that typically achieves the highpass response by subtracting a lowpass version of the input from the input, leaving just the portions of the signal above DC.
Will high-pass filter remove DC offset?
This DC offset is due to the local oscillator leakage in the base band. The high pass filter can be used. DC means zero frequency so we can remove it with using high pass filter.
