Microphone
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Issued Date -
Oct 26, 2023
app pub date -
Nov 25, 2022
filing date -
Apr 20, 2022
priority date (Note) -
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status (Latency Note)
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Abstract
The present invention provides a microphone, including a protection structure with a containment space, and an ASIC chip and a MEMS microphone chip accommodated in the containment space. The microphone also includes a low pass filter circuit. The low pass filter circuit is connected between the ASIC chip and the MEMS microphone chip, or the low pass filter circuit is integrated in the ASIC chip. The high frequency cutoff frequency of the low pass filter circuit is greater than 20 khz, so that by setting the low pass filter circuit, the interference of the ultrasonic frequency band can be filtered, the noise can be reduced, and the audio quality can be improved.
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