Enhanced detection of vibration

摘要: A device detects an emission source of a vibration signal against background noise, where the is produced by mechanical system and has one or more frequency components. sensor senses produces corresponding to signal. The selection structure for mechanically resonating at desired frequencies attenuating component having outside frequencies. thus mechanically-tuned Electrical filters electrically attenuate electrical produce electrically-tuned least amplifier with gain producing amplified An amplitude characteristic determination circuit determines signal's amplitude. also generates indication based on characteristic. adjusts in part indication.