Rnwong...Liz is pulling your leg...and mocking all who use the PMR or for that matter, any acoustical resonance device.
The only thing you need to know about the PMR is that its simulates the very real positive effects that tuned resonances can have on an acoustical space. Take for example the world famous Vienna Musikverein where you will notice,upon close inspection,large hollow brass figures all along the walls.
Hmmmm..makes one wonder why its considered one of the most perfect acoustical spaces in the world!
The only thing you need to know about the PMR is that its simulates the very real positive effects that tuned resonances can have on an acoustical space. Take for example the world famous Vienna Musikverein where you will notice,upon close inspection,large hollow brass figures all along the walls.
Hmmmm..makes one wonder why its considered one of the most perfect acoustical spaces in the world!