The disclosure relates to an electronic apparatus including: a speaker including a transducer provided in an enclosure of a housing and configured to perform an amplitude movement based on a first driving signal, and an active radiator configured to perform an amplitude movement based on a rear wave due to the amplitude movement of the transducer and a second driving signal; and an amplifier configured to output the first driving signal corresponding to the sound signal and the second driving signal which complements the amplitude movement of the active radiator based on the rear wave of the transducer and allows an output sound pressure of the active radiator to be a target value.

The present disclosure provides a speaker diaphragm and a speaker. The diaphragm includes two surface layers compounded together and at least one intermediate layer located between the two surface layers, wherein at least one of the surface layers is a thermoplastic polyester elastomer film layer, at least one of the intermediate layers is an adhesive layer, a thermoplastic polyester elastomer is a copolymer composed of a polyester hard segment A and a polyether or aliphatic polyester soft segment B, a thickness of the thermoplastic polyester elastomer film layer is 5-70 μm, and a thickness of the adhesive layer is 1-40 μm.

The present disclosure provides a speaker, comprising a vibration system including a speaker diaphragm and a magnetic circuit system cooperating with the vibration system. The speaker diaphragm comprises a thermoplastic polyester elastomer membrane and has a vibration amplitude of 0.25-1 mm, and the speaker has F.sub.0 of 150-1500 Hz. The speaker has the characteristic of good listening effect.

The present disclosure provides a speaker diaphragm and a speaker. The diaphragm includes two surface layers compounded together and at least one intermediate layer located between the two surface layers, at least one of the surface layers is a thermoplastic polyester elastomer film layer, and at least one of the intermediate layers is au adhesive layer, wherein the thermoplastic polyester elastomer film layer has a Young's module of 1-1000 MPa, a loss factor being greater than or equal to 0.015, and an elastic recovery rate after 10% strain being greater than or equal to 80%. The speaker diaphragm may be made very thin, thus reducing the weight of the speaker diaphragm, improving the space allowance for vibration, improving the sensitivity, and making the F.sub.0 of the speaker lower. Further elastic area of the speaker diaphragm is wider and the resilience performance is excellent.

A method of forming a device having a compliant member includes providing an elastomeric layer in an uncured state. The elastomeric layer is pre-cured to increase its viscosity. Subsequently, a bobbin and housing, each having an end, can be positioned such that their ends extend at least partially into the elastomeric layer. The elastomeric layer is cured to secure it to the bobbin housing. Examples of pre-cure and cure operations include one or more of a thermal cure, evaporative cure and ultraviolet cure, and the application of moisture, microwave energy and chemical additive. Due to the increased viscosity after the pre-cure, the migration of elastomeric material is substantially reduced relative to an uncured elastomeric material. The reduction in elastomeric material migration results in smaller menisci formed along the walls of the housing and bobbin, and reduced thinning of the compliant member formed at their ends.

The present application relates to an improved flat panel loudspeaker design. According to some aspects, the loudspeaker may include a flat panel, and a driving unit coupled to the flat panel configured to produce resonant behavior in the flat panel according to an electrical signal received by the driving unit. One or more pieces of reticulated foam may be mechanically coupled to the flat panel, and in some cases may cover the entire surface of the flat panel.

The present disclosure is directed to electroacoustical devices comprising patterned MXene compositions on biaxially oriented polymer substrates and methods of making and using the same.

A speaker diaphragm includes a first polymer and a second polymer. The first polymer and the second polymer undergo phase separation. The first polymer is a polyolefin, and the second polymer is a thermoplastic resin being immiscible with the polyolefin. One of either the polyolefin or the thermoplastic resin constitutes a sea phase, and another one of either the polyolefin or the thermoplastic resin constitutes island phases being interspersed in the sea phase.

In at least one embodiment, a loudspeaker assembly for a vehicle is provided. The assembly includes a diaphragm; a loudspeaker, and a carrier. The loudspeaker includes a first end for being positioned in a first area of the vehicle that is exposed to external ambient noise to the vehicle and a second end for being positioned in a second area of the vehicle that is exposed directly within an interior cabin of the vehicle to provide desired audio along a first axis to the interior cabin. The carrier is attached to the second end of the loudspeaker and includes noise absorption material to prevent the external ambient noise from entering into the vehicle. The carrier defines a plurality of openings positioned on an outer perimeter thereof to enable the desired audio to enter into the interior cabin along a second axis that is different than the first axis.

In at least one embodiment, a loudspeaker assembly for a vehicle is provided. The assembly includes a diaphragm; a loudspeaker, and a carrier. The loudspeaker includes a first end for being positioned in a first area of the vehicle that is exposed to external ambient noise to the vehicle and a second end for being positioned in a second area of the vehicle that is exposed directly within an interior cabin of the vehicle to provide desired audio along a first axis to the interior cabin. The carrier is attached to the second end of the loudspeaker and includes noise absorption material to prevent the external ambient noise from entering into the vehicle. The carrier defines a plurality of openings positioned on an outer perimeter thereof to enable the desired audio to enter into the interior cabin along a second axis that is different than the first axis.