On-Line excerpt from Sound reproduction: Loudspeakers and Rooms ( by Floyd Toole )

[Robert Burns]

Sections of Floyd Toole's outstanding book on "Loudspeakers: Objective Evaluations"

http://www.eetimes.com/design/audio...rce-radiation-patterns?Ecosystem=audio-design
http://www.eetimes.com/design/audio...ring-the-essential-properties-of-loudspeakers
http://www.eetimes.com/design/audio...omparing-the-subjective-and-objective-domains

( while primarily aimed to HT: It applies to all audio - including these graphics: )
http://www.eetimes.com/ContentEETimes/Images/loudspeakers_objective_evaluations_fig1.jpg
http://www.eetimes.com/ContentEETimes/Images/loudspeakers_objective_evaluations_fig3.jpg