Abstract: To improve upon a method of adjusting at least one filter parameter such as the mid-frequency of at least one filter unit provided with a playback system for audio signals, this filter unit being provided in particular for at least one digital equalizer assigned to the playback system, as well as an associated playback system so as to achieve automatic optimization of an acoustically correct bass level boosting, [a] first the acoustic frequency response is determined, [b] then a cutoff frequency below which the sound pressure falls below a sound pressure threshold level based on the average sound pressure is determined, and [c] next the filter parameter(s) of the filter unit is/are adjusted automatically, so that the mid-frequency of the filter unit is just above the cutoff frequency thus determined.

Abstract: To improve upon a method of adjusting at least one filter parameter such as the mid-frequency of at least one filter unit provided with a playback system for audio signals, this filter unit being provided in particular for at least one digital equalizer assigned to the playback system, as well as an associated playback system so as to achieve automatic optimization of an acoustically correct bass level boosting,

Abstract: A method of acoustically correct boosting of the bass level of a playback system for audio signals by adjusting at least one filter parameter of at least one bass-boosting filter unit which is provided for the playback system and is assigned in particular to at least one digital equalizer that is provided with the playback system so that excessive boosting of bass level is prevented is described. This involves adjusting at least one filter parameter of the bass-boosting filter unit so that the boost in the bass level is reduced with an increase in the cut-off frequency and/or with an increase in the mid-frequency of the bass-boosting filter unit such that the isophones in the remaining reproducible bass frequency range are not exceeded.