System and method of controlling loudness of an electroacoustic transducer

A method of controlling loudness of an electroacoustic transducer by at least one processor, the method comprising:

• receiving a transfer function data element representing a transfer function between (a) electrical input and (b) sound pressure level (SPL) output of the electroacoustic transducer;
• applying the transfer function on an incoming electrical signal, to obtain an expected SPL signal, representing expected SPL of the electroacoustic transducer in response to the incoming electrical signal;
• segmenting the expected SPL signal into a plurality of band-specific SPL signals, each associated with a respective frequency pass band or frequency gap band;
• identifying at least one fundamental acoustic tone in the expected SPL signal;
• producing at least one electrical compensation signal, corresponding to an acoustic harmonic of the at least one identified fundamental acoustic tone;
• controlling the loudness of the electroacoustic transducer, based at least in part on the at least one electrical compensation signal;
• and
• for at least one of the plurality of band-specific SPL signals that are associated with the frequency pass bands:
• determining one or more acoustic harmonic frequencies of at least one identified fundamental acoustic tone, based on the respective frequency pass band;
• determining one or more acoustic amplitudes, corresponding to the one or more acoustic harmonic frequencies, based on the respective frequency pass band;
• and
• producing at least one respective harmonic SPL signal, representing SPL of the one or more acoustic harmonic frequencies, at the one or more corresponding acoustic amplitudes,
• wherein identifying at least one fundamental acoustic tone comprises, for at least one of the plurality of band-specific SPL signals that are associated with the frequency pass bands, identifying the at least one fundamental acoustic tone as a prevalent tone represented by the band-specific SPL signal.