Vibration sensor and microphone

A microphone, comprising:

• a housing;
• a vibration sensor in the housing, the vibration sensor including:
• a base, including a cavity, and
• a plurality of vibration beams, sequentially arranged on the base, wherein each vibration beam includes:
• a fixed terminal, including two parts respectively located at two ends of the vibration beam and connected to the base, and
• a movable terminal, connected to the fixed terminal, located between the two parts of the fixed terminal, and suspended in the cavity, wherein
• a portion, suspended in the cavity, of each vibration beam has a different dimension and a different natural frequency, and each vibration beam generates, in response to an external vibrational excitation, a vibration signal in a sub-target frequency window including a natural frequency corresponding to the vibration beam, and the vibration sensor is mounted in the housing, and the base is fixedly connected to the housing;
• and
• a signal synthesizing circuit, connected to the plurality of vibration beams and configured to collect the vibration signals during operation and perform signal synthesis on the vibration signals, to generate a vibration signal within a target frequency window, wherein a plurality of sub-target frequency windows corresponding to the plurality of vibration beams cover different frequency ranges, and the plurality of sub-target frequency windows constitutes the target frequency window.