We have worked with Dr.Toole for >20 years on various projects, many for Harman International.
IMHO..
He is without a doubt one of the most knowledgeable audio/acoustic experts anywhere. 1 of things many fail to understand is that Harman International is 1 of few audio companies that had significant R&D resources in loudspeakers (JBL, Revel, Infinity)
and electronics (HK, JBL, Lexicon, Crown). He also is primary presenter @ the CEDIA shows, besides being a friendly, nice guy.. I have spent considerable time with Dr. Toole and staff, I can truly say he has been an incredible mentor especially for understanding some of the challenging objectives to design/build high resolution loudspeakers and electronics. He has written many AES papers and his book is an excellent reference. I will always cherish this incredible experience.
Here is a link for the subject book if U have a further interest...
https://www.amazon.com/Sound-Reproduction-Psychoacoustics-Loudspeakers-Engineering/dp/0240520092/ref=sr_1_fkmr0_2?ie=UTF8&qid=1524082202&sr=8-2-fkmr0&keywords=dr.+floyd+toole
Just my $0.02...