The invention relates to a system (102) for providing biofeedback to a person (104). The system (102) comprises a source (106) for generating a source signal (108) and a transducer (110) for generating a measurement signal (112) in response to a physiological parameter (114) indicative for mental relaxation of the person (104). The system (102) furthermore comprises a filter (116) for variably filtering the source signal via modifying a cut-off frequency in response to the measurement signal (112) and an interface (118) for providing a biofeedback signal (119) to the person on the basis of the source signal as variably filtered by the filter (116).