A method for estimating at least one parameter characterising an acoustic assembly including a plurality of radiating elements sharing a same enclosure including at least one electroacoustic transducer, this method including: - a step of digital modelling based on a state-space time representation of the acoustic assembly describing a coupling between the radiating elements by means of their effective radiation surfaces, each state associated with a radiating element including: ∘ if the radiating element is an active radiating element: a magnitude representative of an intensity of an electric current passing through the active radiating element, a magnitude representative of a movement of a membrane of the active radiating element and a magnitude representative of a speed of this movement; and ∘ if the radiating element is a passive radiating element: a magnitude representative of a movement of a membrane of the passive radiating element or of a mass of air in this passive radiating element and a magnitude representative of a speed of this movement; - a step of determination of the values of the states of the radiating elements from at least one electrical measurement of a response of the radiating elements to an excitation of the acoustic assembly carried out by means of at least one determined excitation signal; and - a step of estimation of said at least one parameter of the acoustic assembly using the state-space time representation, the values of the effective radiation surfaces of the radiating elements and the values of the determined states. - a step of digital modelling based on a state-space time representation of the acoustic assembly describing a coupling between the radiating elements by means of their effective radiation surfaces, each state associated with a radiating element including: ∘ if the radiating element is an active radiating element: a magnitude representative of an intensity of an electric current passing through the active radiating element, a magnitude representative of a movement of a membrane of the active radiating element and a magnitude representative of a speed of this movement; and ∘ if the radiating element is a passive radiating element: a magnitude representative of a movement of a membrane of the passive radiating element or of a mass of air in this passive radiating element and a magnitude representative of a speed of this movement; ∘ if the radiating element is an active radiating element: a magnitude representative of an intensity of an electric current passing through the active radiating element, a magnitude representative of a movement of a membrane of the active radiating element and a magnitude representative of a speed of this movement; and ∘ if the radiating element is a passive radiating element: a magnitude representative of a movement of a membrane of the passive radiating element or of a mass of air in this passive radiating element and a magnitude representative of a speed of this movement; - a step of determination of the values of the states of the radiating elements from at least one electrical measurement of a response of the radiating elements to an excitation of the acoustic assembly carried out by means of at least one determined excitation signal; and - a step of estimation of said at least one parameter of the acoustic assembly using the state-space time representation, the values of the effective radiation surfaces of the radiating elements and the values of the determined states.