In the described technique, electrical audio signals are processed by inverse filtering according to three filter matrices, each handling a frequency range or sample rate or both. Loudspeakers, arranged at separate positions separate within or near the sound zones, convert the electrical audio signals into corresponding acoustic audio signals. Then each of the acoustic audio signals is transferred according to a transfer matrix from each of the loudspeakers to each of the sound zones, where the transferred acoustic signals contribute to the corresponding reception sound signals. The three filter matrices are configured to compensate for the transfer matrix so that each one of the reception sound signals corresponds to one of the electrical audio signals.