The BSU Infrasound Lab (led by PIs Dr. Jake Anderson and Dr. Jeffrey Johnson) builds infrasound instrumentation for our own use and for others, depending on needs and availability of labor. We have equipment, workflows, expertise, and capable student employees that enable us to develop, build, and test sensors efficiently. As field scientists ourselves, we understand infrasound recording and how to facilitate it with good instrumentation, and we record our own data using mostly lab-built sensors.

If you're interested in buying something we make, check with us about availability and lead time first. We are not a business or trade and are not profit-motivated. Our goal is to help promote infrasound research through dissemination of low cost calibrated infrasound sensors and to grow our community. Provision of sensors to individuals is infrequent and selective and based upon materials and supplies that are available. Our prices are set to cover material, construction, and testing expenses; we try to offer comparable instrumentation at lower costs than what is commercially available.

Other Instrumentation

In addition to the Gem Infrasound Logger, we build the following devices:

• infraBSU infrasound sensor. Consider this if you already have a multichannel data logger and need analog sensors to connect to it. It has a well-calibrated response that is flat above 0.1 Hz, and lower cost and lower power consumption than most infrasound sensors. Its signal characteristics (self-noise and response) are comparable to the Gem.

• Camas audible sound sensor: an electret condenser microphone with adjustable amplification, optional anti-aliasing filter, and convenient outputs to connect to a data logger. Compared to the infraBSU, the Camas is uncalibrated (adjustable sensitivity, typical corner frequency around a few Hz), lacks an enclosure, has lower self-noise, and draws even less power.