BIOPAC® Systems, Inc. Logo

Low pass filters

Low pass filters attenuate the components of a signal above a certain frequency. They are useful for removing higher frequency variation — for instance, from electrical thermal noise or EMG activity that is uninteresting (in context) — from lower frequency signals. For instance, if you have a noisy ECG signal, you can turn on the amplifier's 35 Hz Low Pass filter (a switch on module's front face) to improve the signal quality. You may also perform this filtering in software (“Transform > Digital Filters > IIR > Low Pass…”).  The cutoff frequency of the filter provides an indication of which frequencies will have their power levels diminished.  Note that some energy at frequencies above the cutoff frequency may remain in the filtered signal.

 

Page last modified 30Dec2014

Associated Applications

Associated Disciplines

Spotlight On
Ventilator Validation Kit

Ventilator Validation and Test Equipment

The Ventilator Validation Kit supports new prototype development, existing design validation for production testing, mobile field testing and verification, and other uses where accurate pressure and flow measurements are critical. The Ventilator Validation Kit provides ventilator manufacturers and prototype developers with a complete solution for validating new medical/hospital-grade ventilator products intended for human use. The VVK100-SYS includes […]

View All
Latest News

Researchers Respond | iSAVE: Rapidly deployable system to expand ventilator capacity

MIT and Harvard researchers developed a new technique to expand ventilator capacity Individualized System for Augmenting Ventilator Efficacy (iSAVE): A Rapidly deployable system to expand ventilator capacity “The iSAVE is a rapidly deployable solution in response to the urgent shortage of mechanical ventilators for respiratory support during the COVID-19 pandemic. In contrast to previously described […]

New Ventilator Validation Kit for Rapid Development & Field Testing

New Ventilator Validation System Allows Device Manufacturers to Test Ventilator Pressure and Volume System supports rapid development and testing of hardware for COVID-19 treatment Goleta, California – March 24, 2020 BIOPAC Systems, Inc. announced a new Ventilator Validation System for engineering and device manufacturers to use when designing and testing new and existing ventilators for […]

Read All
Request a Demonstration
Request a Demonstration