Different layouts, resonators ? Reflected sound energ

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2014, 6+ decades newer, so bound to have a lot of new [to us] info plus includes equations, figures, tables, references, and solved examples and unsolved exercises with answers, but personally not interested enough to pay its reasonable, but too high a price for me.
 
Snagged it for $74 used in ‘like new ‘ condition.?


I have a final sim ready after much tomfoolery and searching for the greatest impact to ‘change’ in 30 seconds or less:

With polyfill (right). and without(left) (both at Xmax) note the Eg!!??? Input power..
 

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