hi, one small question, my media-"mega-pro" skilled friends, do you know how to kinda "neutralize" the hearing (in between a break of) a listening session? am helping one friend of mine, @ his graduation-thesis in music science+ psychology (@ humboldt-univ., berlin); am making some beats for him+ then he will do some field study with people, who listen up to 3 hours to the beats+ who describe, what they feel @ each beat... (& in between the breaks they should kinda neutralize their ears...) many thanks in advance, best regards+blessingx, tom (P.S.: do you do the neutralizing best with "white noise/ pink noise/ classical music? have heard that e.g. @ a perfume-testing session the people will get coffee powder for neutralizing their noses...)
many thx in advance 4 answering :-)

digi rack 003+, PreSonus firepod, mac pro 8-core, logic 9, Cubase artist 6, Wavesbundle, Sony condenser mic...