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公开(公告)号：GB2569810A
公开(公告)日：2019-07-03
申请号：GB201721974
申请日：2017-12-27
Applicant: NOKIA TECHNOLOGIES OY
Inventor： KORAY OZCAN , MIIKKA TAPANI VILERMO , ANTERO TOSSAVAINEN
Abstract: Apparatus 1 comprising a microphone 3 and a sensor 5 where the sensor is formed from a two-dimensional material. The microphone produces an audio output signal 15 and the sensing arrangement produces an electrical output signal 21. The 2D material may be conductive and comprise: part of the membrane 7, a second membrane (5, Fig. 4A); or part of the back plate (5, 17, Fig. 3). The two-dimensional material may be graphene, graphene oxide, reduced graphene oxide, functionalized graphene, molybdenum disulphide, tungsten disulphide or boron nitride. The audio and electrical signals may be provided separately or at the same time on a common or separate output terminal(s). The audio signal may indicate a change in capacitance in the microphone and the electrical signal a change in conductivity of the two-dimensional material in response to parameters such as temperature, humidity, light or analytes. Both signals may be processed by electronic circuitry. The apparatus may provide a direct current bias voltage to the microphone membrane and a gate electrode of the two-dimensional material (Fig. 5). The apparatus may provide an alternating current carrier signal to the two-dimensional material, the frequency being above audible frequency range (Fig. 5). A device may comprise a plurality of aforementioned apparatus and use the processed audio and electrical signals to adaptively adjust one or more specifications of the apparatus.
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公开(公告)号：GB2606025A
公开(公告)日：2022-10-26
申请号：GB202105814
申请日：2021-04-23
Applicant: NOKIA TECHNOLOGIES OY
Inventor： KORAY OZCAN , MIIKKA TAPANI VILERMO , ANTERO TOSSAVAINEN
Abstract: The audio transducer comprises at least one air displacement component, such as a diaphragm and a housing configured to retain the at least one air displacement component. The audio transducer comprises self-healing material so that at least part of the air displacement component or housing comprise the self-healing material. The self-healing material can enable repair of the audio transducer when the audio transducer is deformed and/or if there are any other defects within the audio transducer. Upon detection of such deformation and/or defects a trigger signal is generated to initiate the self-healing process. The self-healing process may be initiated by the application of heat.
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公开(公告)号：GB2569809A
公开(公告)日：2019-07-03
申请号：GB201721972
申请日：2017-12-27
Applicant: NOKIA TECHNOLOGIES OY
Inventor： KORAY OZCAN , MIIKKA TAPANI VILERMO , ANTERO TOSSAVAINEN
Abstract: An apparatus 1 comprising: an audio transducer 3; a two-dimensional sensing portion 5; and electronic circuitry 3. In operation the sensing portion detects one or more operating conditions of the loudspeaker and provides an output signal to the electronic circuitry which uses said signal to control the audio signal. The two dimensional material comprises at least one of: graphene; graphene oxide; reduced graphene oxide; functionalized graphene; molybdenum disulphide; tungsten disulphide; or boron nitride. The sensing portion may be inside the loudspeaker and provide an indication of a change in conductivity of the two-dimensional material in response to operating conditions of the audio transducer such as temperature, humidity, light or analytes in one or more parts of the loudspeaker. The 2D sensing material (9, Fig. 5) may comprise a conductive material coupled to a voice coil; diaphragm (21, Fig. 5); magnet (31, Fig. 5); or bottom plate of the loudspeaker. The sensing portion may also provide a heat sink function. Control of the audio signal may comprise adjusting the driving voltage.
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