A method for acquiring signals via ultrasound probing, comprising the following steps: - controlling L emission transducers (108 1,..., 108 N) for M successive emissions of ultrasound waves towards a zone of interest, - controlling N reception transducers (108 1,..., 108 N) in such away as to receive simultaneously and over a predetermined time, for each of the M successive emissions, N measurement signals, measuring in particular echoes caused by reflections of the emission in question in the zone of interest, - obtaining a matrix [MR(t)] of ultrasound time signals having a size of NxM, each coefficient MR i,j (t) of this matrix representing the measurement signal received by the i-th reception transducer caused by the j-th emission, characterised in that: - an initial matrix [MC'], having a size of LxM', for encoding the successive emissions is previously defined for a number M' of successive initial emissions strictly greater than M, each coefficient MC' i,j of this matrix representing a multiplication factor applied to a common excitation time signal e(t) for its emission by the i-th emission transducer at the time of the j-th emission, - a calculation of acoustic field is carried out for each of the M' successive initial emissions, - a reduced encoding matrix, having a size of LxM, is obtained from the initial encoding matrix [MC'] by removal of M'-M column(s) corresponding to M'-M initial emissions eliminated on the basis of a selection criterion applied to the M' calculations of acoustic fields, and - the control of the L emission transducers for the M successive emissions of ultrasound waves towards the zone of interest is encoded using the reduced encoding matrix applied to the common excitation time signal e(t). - controlling L emission transducers (108 1,..., 108 N) for M successive emissions of ultrasound waves towards a zone of interest, - controlling N reception transducers (108 1,..., 108 N) in such away as to receive simultaneously and over a predetermined time, for each of the M successive emissions, N measurement signals, measuring in particular echoes caused by reflections of the emission in question in the zone of interest, - obtaining a matrix [MR(t)] of ultrasound time signals having a size of NxM, each coefficient MR i,j (t) of this matrix representing the measurement signal received by the i-th reception transducer caused by the j-th emission, - an initial matrix [MC'], having a size of LxM', for encoding the successive emissions is previously defined for a number M' of successive initial emissions strictly greater than M, each coefficient MC' i,j of this matrix representing a multiplication factor applied to a common excitation time signal e(t) for its emission by the i-th emission transducer at the time of the j-th emission, - a calculation of acoustic field is carried out for each of the M' successive initial emissions, - a reduced encoding matrix, having a size of LxM, is obtained from the initial encoding matrix [MC'] by removal of M'-M column(s) corresponding to M'-M initial emissions eliminated on the basis of a selection criterion applied to the M' calculations of acoustic fields, and - the control of the L emission transducers for the M successive emissions of ultrasound waves towards the zone of interest is encoded using the reduced encoding matrix applied to the common excitation time signal e(t).