An electronic band-pass filtering device able to receive an input signal (Xe) and deliver an output signal (Ys) having an amplitude, outside a frequency band centered around a target frequency (Fw), that is attenuated relative to that of the input signal (Xe), the device comprising: - a first notch filter, able to receive the input signal (Xe) and deliver a first filtered signal having an amplitude, at a first cutoff frequency, that is attenuated in relation to that of the input signal (Xe), the first cutoff frequency being substantially equal to the target frequency (Fw), - a second notch filter, able to receive the input signal (Xe) and deliver a second filtered signal having an amplitude, at a second cutoff frequency, that is attenuated in relation to that of the input signal (Xe), the second cutoff frequency being distinct from the first cutoff frequency, the second cutoff frequency being strictly less than, or strictly greater than the target frequency (Fw) - a generation module connected to the output of the first and second notch filters, configured to generate the output signal (Ys) from a combination of the first and second filtered signals, at least one, preferably each, of the first and second notch filters comprising: + an integration module configured to integrate the input signal during several successive time windows (W1, W2), each time window (W1, W2) starting at a respective initial instant in time and having a duration substantially equal to the inverse of the cutoff frequency (Fc), the initial instants in time of at least two distinct windows (W1, W2) being separated by a time shift of value greater than or equal to a predefined reference duration (Df), each integration of the input signal (Xe) during a respective time window (W1, W2) resulting in a respective intermediate signal (Si), + a summing module connected to the output of the integration module, configured to add up the intermediate signals (Si) coming from the integration module, the filtered signal being a function of the sum of said intermediate signals (Si). - a first notch filter, able to receive the input signal (Xe) and deliver a first filtered signal having an amplitude, at a first cutoff frequency, that is attenuated in relation to that of the input signal (Xe), the first cutoff frequency being substantially equal to the target frequency (Fw), - a second notch filter, able to receive the input signal (Xe) and deliver a second filtered signal having an amplitude, at a second cutoff frequency, that is attenuated in relation to that of the input signal (Xe), the second cutoff frequency being distinct from the first cutoff frequency, the second cutoff frequency being strictly less than, or strictly greater than the target frequency (Fw) - a generation module connected to the output of the first and second notch filters, configured to generate the output signal (Ys) from a combination of the first and second filtered signals, + an integration module configured to integrate the input signal during several successive time windows (W1, W2), each time window (W1, W2) starting at a respective initial instant in time and having a duration substantially equal to the inverse of the cutoff frequency (Fc), the initial instants in time of at least two distinct windows (W1, W2) being separated by a time shift of value greater than or equal to a predefined reference duration (Df), each integration of the input signal (Xe) during a respective time window (W1, W2) resulting in a respective intermediate signal (Si), + a summing module connected to the output of the integration module, configured to add up the intermediate signals (Si) coming from the integration module, the filtered signal being a function of the sum of said intermediate signals (Si).