In a classroom at Colorado College’s Barnes Science Center on Thursday, several CC students and a small group of observers from the National Society of Professional Engineers watched as the air ...

Long-term exposure to low-frequency noise can cause numerous health problems, but the solution may be found in an unexpected object, a pingpong ball. Conventionally thought of as the hollow plastic ...

Constant city noise has been linked to long-term health problems, but it's hard to keep out of homes and businesses; low-frequency sounds such as traffic and construction propagate easily through ...

Researchers describe an acoustic meta-surface that uses pingpong balls, with small holes punctured in each, as Helmholtz resonators to create inexpensive but effective low-frequency sound insulation.