Absolutely. In fact , such devices already exist for noise cancelation in HVAC systems. http://www.ibp.fraunhofer.de/akustik/ts ... dex_e.html http://www.silentium.com/page.aspx?pare ... =35&type=2If I were to place a speaker and microphone in the ends of the duct or at a elbow I could actively cancel the bass frequencies and use baffling in the vent to attenuate the high frequencies! Has anyone tried this? I read one post where someone was suggesting a similar setup to cancel the fan noise from coming into the studio, but could this also work to keep low frequencies from getting out?
John - Active Bass Absorbers?
Originally posted at johnlsayers.com, topic 636.
I think Volvo had a few cars that utilized them aswell.