Washing machine wherein there is resiliently suspended a washing chamber or tub in which there is mounted a drum rotatable about an axis, and comprising an electrodynamic position transducer device connected to the washing chamber or tub for detecting the level of the washing bath in the chamber or tub, and coupled to an electronic control unit of the machine, designed to evaluate the signals or data generated and emitted during operation by the transducer device so as to derive, from the signals or data, information selectively indicative either of the amplitude of the vibrations or oscillations of the chamber or tub, or of the level of the washing bath in the chamber or tub; the electrodynamic position transducer device comprising a hollow rigid casing in which there is clamped a diaphragm which, together with a portion of the casing, defines at least one chamber (6, 7) having a variable volume; at least one winding; an interaction member, adapted to magnetically interact with the winding as a consequence of a displacement of the diaphragm, in such a way that the inductance of the winding varies as a function of the relative position of the interaction member with respect to the winding, and processing means coupled to the aforesaid winding and adapted to supply electric signals having a parameter, such as for example a voltage, which is variable as a function of the inductance of the winding and thus as a function of the relative position of the interaction member; the machine being characterized in that the drum is rotatable about an at least approximately vertical axis, and in that said processing means comprise memory means adapted to store data representative of correction values which, when applied during operation to the instantaneous actual values of the parameter, allow corrected values of the parameter, corresponding to a predetermined transduction characteristic, to be obtained; said processing means being designed to correct the instantaneous actual values of said parameter in such a way that, at least when the actual values of the parameter are lower than a predetermined value, the processing means generate and emit corrected values of the parameter which are amplified by a predetermined factor, wherein the processing means have an input for a control signal assuming two values or states, and are designed to generate and emit amplified corrected values of the parameter when the control signal assumes a predetermined value or state, and wherein the control unit comprises a control circuit or device adapted to receive signals or data indicative of the current phase of a washing cycle, and to supply the processing means of the transducer device with a control signal having the predetermined value or state when a spinning phase is being carried out. a hollow rigid casing in which there is clamped a diaphragm which, together with a portion of the casing, defines at least one chamber (6, 7) having a variable volume; at least one winding; an interaction member, adapted to magnetically interact with the winding as a consequence of a displacement of the diaphragm, in such a way that the inductance of the winding varies as a function of the relative position of the interaction member with respect to the winding, and processing means coupled to the aforesaid winding and adapted to supply electric signals having a parameter, such as for example a voltage, which is variable as a function of the inductance of the winding and thus as a function of the relative position of the interaction member; the machine being characterized in that the drum is rotatable about an at least approximately vertical axis, and in that said processing means comprise memory means adapted to store data representative of correction values which, when applied during operation to the instantaneous actual values of the parameter, allow corrected values of the parameter, corresponding to a predetermined transduction characteristic, to be obtained; said processing means being designed to correct the instantaneous actual values of said parameter in such a way that, at least when the actual values of the parameter are lower than a predetermined value, the processing means generate and emit corrected values of the parameter which are amplified by a predetermined factor, wherein the processing means have an input for a control signal assuming two values or states, and are designed to generate and emit amplified corrected values of the parameter when the control signal assumes a predetermined value or state, and wherein the control unit comprises a control circuit or device adapted to receive signals or data indicative of the current phase of a washing cycle, and to supply the processing means of the transducer device with a control signal having the predetermined value or state when a spinning phase is being carried out.