A sound producing device comprising: a base; and at least one chip (100, 100_1, 100_2, 100_3, 100_4, 100_5, 100_6, 100', 200 or 300) disposed on the base, the at least one chip (100, 100_1, 100_2, 100_3, 100_4, 100_5, 100_6, 100', 200 or 300) comprising: at least one membrane comprising a coupling plate and at least one spring structure connected to the coupling plate, wherein the at least one membrane has a plurality of outer edges defining a boundary of the at least one membrane; at least one actuator configured to receive a driving signal corresponding to an input audio signal to actuate the at least one membrane, wherein the input audio signal and the driving signal have an input audio band which has an upper bound at a maximum frequency (f max); and an anchor structure connected to the plurality of outer edges of the at least one membrane; wherein the at least one spring structure is situated between the coupling plate and the at least one actuator, and the at least one membrane has a first resonance frequency (f R) higher than the maximum frequency (f max); wherein the at least one membrane further comprises a driving plate on which the at least one actuator is disposed, and the at least one spring structure is connected between the driving plate and the coupling plate. a base; and at least one chip (100, 100_1, 100_2, 100_3, 100_4, 100_5, 100_6, 100', 200 or 300) disposed on the base, the at least one chip (100, 100_1, 100_2, 100_3, 100_4, 100_5, 100_6, 100', 200 or 300) comprising: at least one membrane comprising a coupling plate and at least one spring structure connected to the coupling plate, wherein the at least one membrane has a plurality of outer edges defining a boundary of the at least one membrane; at least one actuator configured to receive a driving signal corresponding to an input audio signal to actuate the at least one membrane, wherein the input audio signal and the driving signal have an input audio band which has an upper bound at a maximum frequency (f max); and an anchor structure connected to the plurality of outer edges of the at least one membrane; wherein the at least one spring structure is situated between the coupling plate and the at least one actuator, and the at least one membrane has a first resonance frequency (f R) higher than the maximum frequency (f max); wherein the at least one membrane further comprises a driving plate on which the at least one actuator is disposed, and the at least one spring structure is connected between the driving plate and the coupling plate. at least one membrane comprising a coupling plate and at least one spring structure connected to the coupling plate, wherein the at least one membrane has a plurality of outer edges defining a boundary of the at least one membrane; at least one actuator configured to receive a driving signal corresponding to an input audio signal to actuate the at least one membrane, wherein the input audio signal and the driving signal have an input audio band which has an upper bound at a maximum frequency (f max); and an anchor structure connected to the plurality of outer edges of the at least one membrane; wherein the at least one spring structure is situated between the coupling plate and the at least one actuator, and the at least one membrane has a first resonance frequency (f R) higher than the maximum frequency (f max); wherein the at least one membrane further comprises a driving plate on which the at least one actuator is disposed, and the at least one spring structure is connected between the driving plate and the coupling plate.