ACOUSTIC FEEDBACK CONTROL METHOD WITH ADAPTIVE FILTERING

An acoustic feedback control adaptive method, the input signal being a function of a captured signal and an estimation of an acoustic feedback, the method including the following steps: -determining an impulse response (RI) of a filter (A) according to a partition of time blocks (b0, . . . bi, . . . , bNb), according to the following steps of: -for each sub-block (h1,i, h2,i, . . . hj,i, . . . hNi,i) of each block of the impulse response (RI), calculating a frequency transform (F1,i, F2,i, . . . Fj,i, . . . FNi,i); -repeating the following steps of: -applying the filter (A) to the output signal (u) using the frequency transform (F1,i, F2,i, . . . Fj,i, . . . FNi,i) of each sub-block (h1,i, h2,i, . . . hj,i, . . . hNi,i); -updating the frequency transform (F1,i, F2,i, . . . Fj,i, . . . FNi,i) of each sub-block (h1,i, h2,i, . . . hj,i, . . . hNi,i) as a function of the output signal and the input signal based on the same partition as that used in the step of applying the filter (A).