Electronic device, active noise reduction system, and active noise reduction method

An electronic device comprising an active noise reduction system, the active noise reduction system comprising:

• a substrate;
• a plurality of capacitors mounted on the substrate;
• a noise sensor mounted on the substrate and used to collect a noise signal around the noise sensor;
• an actuator mounted on the substrate and used to generate vibrations;
• a controller mounted on the substrate and electrically coupled to the noise sensor and the actuator, the controller used to obtain the noise signal collected by the noise sensor and generate a control signal according to the noise signal to the actuator to control the actuator to generate vibrations having a same frequency and opposite phase as the noise signal to cancel out the vibrations generated by the plurality of capacitors and the vibrations of the substrate caused by the vibrations generated by the plurality of capacitors.

An active noise reduction method comprising:

• providing a substrate;
• providing a plurality of capacitors mounted on the substrate;
• providing a noise sensor mounted on the substrate, the noise sensor used to collect a noise signal around the noise sensor;
• providing an actuator mounted on the substrate, the plurality of capacitors mounted on a same surface of the substrate, and the actuator used to generate vibrations;
• obtaining the noise signal collected by the noise sensor;
• generating a control signal according to the noise signal to the actuator to control the actuator to generate vibrations having a same frequency and opposite phase as the noise signal to cancel out the vibrations generated by the plurality of capacitors and the vibrations of the substrate caused by the vibrations generated by the plurality of capacitors.