How well do foam bass traps work in a listening environment?
I am planning to build a couple booths and treat rooms acoustically for listening. Acoustic paneling made from mineral wool is very expensive and foam bass traps are very cheap so I am planning on using them. One of my teachers said they do not have any effect on actual acoustics which I am not so quick to believe because otherwise why make them, right? If I am ignorant please enlighten me in the most informational way possible. I need to know well what im dealing with and what to expect in cost for room treatment.