Create a command in MATLAB that processes an input signal \(x\) with a frequencyresponse masking filter, taking advantage of the internal structure of this device. The command receives \(\mathrm{x}\), the frequency-response masking interpolating factor \(L\), and the impulse responses for the base filter \(h b\), positive masking filter \(h p\), and negative masking filter \(h\). Use this command in Experiment 12.1 to process XDSB with the designed frequency-response masking filter, generating the corresponding xSSB signal.