| 摘要 |
Signals due to impacts of loose and free objects are separated and separately processed. A loose object in a device produces pulses synchronized with the vibrations of the device and a free object produces pulses non-synchronous with the vibrations of the device. Loose object pulses are gated into a first channel and rejected from a second channel by gating pulses synchronous with the vibrations. Free object pulses are gated into the second channel by gating pulses synchronous with the vibrations.
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