An acoustic object extraction apparatus, comprising: beamforming processing circuitry (103-1, 103-2), which, in operation, generates a first acoustic signal by beamforming in a direction of arrival of a signal from an acoustic object to a first microphone array, and generates a second acoustic signal by beamforming in a direction of arrival of a signal from the acoustic object to a second microphone array; extraction circuitry, which, in operation, extracts a signal including a common component corresponding to the acoustic object from the first acoustic signal and the second acoustic signal based on a degree of similarity between a spectrum of the first acoustic signal and a spectrum of the second acoustic signal, wherein the extraction circuitry, in operation, divides the spectra of the first acoustic signal and the second acoustic signal into a plurality of subband spectra and calculates for each subband a degree of similarity between a subband spectrum of the first acoustic signal and a subband spectrum of the second acoustic signal; characterized in that, for each subband, the extraction circuitry, in operation, calculates a weighting factor depending on the calculated degree of similarity and multiplies the subband spectrum of the first acoustic signal and the subband spectrum of the second acoustic signal by the weighting factor and outputs the subband spectrum of the first acoustic signal multiplied by the weighting factor and the subband spectrum of the second acoustic signal multiplied by the weighting factor to a spectral reconstructor; wherein the spectral reconstructor, in operation, uses each of the outputted subband spectra of the first acoustic signal and of the outputted subband spectra of the second acoustic signal to reconstruct the spectrum of the signal including a common component corresponding to the acoustic object; and wherein the apparatus further comprises a frequency-time transformer that, in operation, transforms the reconstructed spectrum into a time domain signal. beamforming processing circuitry (103-1, 103-2), which, in operation, generates a first acoustic signal by beamforming in a direction of arrival of a signal from an acoustic object to a first microphone array, and generates a second acoustic signal by beamforming in a direction of arrival of a signal from the acoustic object to a second microphone array; extraction circuitry, which, in operation, extracts a signal including a common component corresponding to the acoustic object from the first acoustic signal and the second acoustic signal based on a degree of similarity between a spectrum of the first acoustic signal and a spectrum of the second acoustic signal, wherein the extraction circuitry, in operation, divides the spectra of the first acoustic signal and the second acoustic signal into a plurality of subband spectra and calculates for each subband a degree of similarity between a subband spectrum of the first acoustic signal and a subband spectrum of the second acoustic signal; characterized in that, for each subband, the extraction circuitry, in operation, calculates a weighting factor depending on the calculated degree of similarity and multiplies the subband spectrum of the first acoustic signal and the subband spectrum of the second acoustic signal by the weighting factor and outputs the subband spectrum of the first acoustic signal multiplied by the weighting factor and the subband spectrum of the second acoustic signal multiplied by the weighting factor to a spectral reconstructor; wherein the spectral reconstructor, in operation, uses each of the outputted subband spectra of the first acoustic signal and of the outputted subband spectra of the second acoustic signal to reconstruct the spectrum of the signal including a common component corresponding to the acoustic object; and wherein the apparatus further comprises a frequency-time transformer that, in operation, transforms the reconstructed spectrum into a time domain signal.