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Purcuant to our recent conversations, thefollor
ing represent dy undcrotanding.o2 the gcnoralfornat
for-thedewonotration: Four platfores-vilibe availsble completo for the demonstrations.te vill uso. tbe.receiving equipacnt at the tro soarces. for 1lo volts ith the platforos in the field. : sl..s. e.
be necessary H improvenent denonctration invoiving taped
inputs:and outputs. vill be ready.: Due to.the
shortnoss of tineit may-be. that ttis deaoa
strationshould beput on tape and simply
played.to: the spectators at. the denonstretion
site(see.attached:genoral structuring)
Thevoluneincrense/nttenticn to aparticular
Eound ccmonstration could possibly also be
taped.lor. play. back.ao. in D.: above
A. general discussioa"concerniog:the thcory
vis-a-vigthe cover
A general. diecussion regarding anticipstod (tentative and, can be

be dcaonstrated if it is availeble.I vould anticirate thst.this would requiro an evening cossion.ins laboratory. hs wo provioucly agreed, it is py undcrstcnding-that you ill.cerry.out all nccessary procedures for-the four platsoros above. cxcept installation thich vill bo postpoued until 2-3. vecks prior to the

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deaonstration.".Per nttachacnt the additional
atudles.to bo initiuted.here.vill hopefullyproduco nu.
advance:in the atato-ol-thc-art.in.tino for 1ncorporation
into your dosonstration platforas.If not, then the old
:style vill bo vaed.:Ivill bein further cos
nunicntion with you ns dat: accunulate. I:an lcoking forvnrd expectantly to succcssful
denonstrations and nm. suro tbat once done,.te can then
nddress oursolves.to follob-cn.tasks of.great-interest Very trcly yours

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A taped calibrnted input for both.S and N at eguivalentsound pressurelevels.Ataped calibrated output(corrccted for1012db pinna and mcatus gain)..It may be possible to also have scope photographed displnys of the same data.It is important,"I believe, to nlso havea standar mike listen to the same taped calibrated input: withthe same. output' display for. comparicon

The nbove should give a direct measure of S/N improvement for both the platform performance and conventional mike performance.

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