Patent ID: 11956595
Assignee: ANPEC ELECTRONICS CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A micro electro-mechanical film speaker device, comprising:
a micro electro-mechanical film speaker;
a signal amplifier circuit having a signal input terminal, a first output terminal, a second output terminal and a feedback terminal, wherein the signal input terminal of the signal amplifier circuit is connected to an external input circuit, the second output terminal of the signal amplifier circuit is connected to a negative terminal of the micro electro-mechanical film speaker, the signal amplifier circuit is configured to amplify an alternating current (AC) input signal from the external input circuit to output a first amplified signal through the first output terminal of the signal amplifier circuit, and the signal amplifier circuit outputs a second amplified signal to the negative terminal of the micro electro-mechanical film speaker through the second output terminal of the signal amplifier circuit;
a first high-pass filter, wherein a first terminal of the first high-pass filter is connected to the first output terminal of the signal amplifier circuit, a second terminal of the first high-pass filter is connected to a positive terminal of the micro electro-mechanical film speaker, and the first high-pass filter is configured to filter the first amplified signal to output a first filtered signal to the micro electro-mechanical film speaker; and
a second high-pass filter, wherein a first terminal of the second high-pass filter is connected to the feedback terminal of the signal amplifier circuit, a second terminal of the second high-pass filter is connected to the positive terminal of the micro electro-mechanical film speaker, and the second high-pass filter is configured to filter the first filtered signal to output a second filtered signal to the feedback terminal of the signal amplifier circuit.