Quest Scientific Instruments
Inc.
HumBug 50/60 Hz Noise
Eliminator
Introducing an exciting new productivity tool from Quest Scientific.
The 'HumBug' Line Noise Eliminator removes line
frequency noise from electrophysiological signals, without filtering.
It removes noise from a wide range of signal levels, continuously,
and without intervention. That adds up to more time getting results,
and less time solving continuously evolving noise problems.
The HumBug was developed in the laboratories of Tom Richardson
MD., PhD, as a way to remove residual line noise picked up
by glass electrodes in brain slice preparations. Quest scientific
now offers the same technology in a precision laboratory instrument.
Although the HumBug uses a powerful signal processor, your signal
is never digitized. Your signal will not suffer frequency loss,
phase error, DC shift, or digitization. The HumBug continuously
constructs a replica of evolving noise present on the input signal
and subtracts this replica from the signal, leaving the physiological
signal intact.
Figure 1. Example setup
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