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Bone vibration sensor

There are two ways to transmit the vibration signals generated by the vocal cords: one is through the air medium, and the other is through the human brain bones and muscles, causing the vibration of the auricle. The bone vibration sensor uses the transmission mode of the latter to detect the vibration signal of the auricle and pick up the voice information of the wearer. The bone vibration sensor is insensitive to the acoustic signal transmitted in the air, and has a natural inhibitory effect on the acoustic signal transmitted in the air. Therefore, the call noise reduction algorithm is simpler and more natural, and the noise suppression is more effective, which can provide a better uplink call effect.
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MEMSAcoustic sensor
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Product description
Parameters

Technical parameter:

PARAMETER CONDITIONS MIN TYP  MAX UNIT
Supply voltage(Vdd)   1.6 2.5 3.6 V
Current consumption(Idd)     150   μA
Sensitivity (X direction) @1kHz   -26   dBV/g
Acceleration range for THD <10% @ 4kHz   4   g
Peak position (resonance freq)   3.5 4 4.5 kHZ
Noise floor 20 Hz to 20 kHz, A-weighted, rms   -82   dBV
DC Output     0.8   V
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