NOSCrptProjCOMBO_1980

SECRET
System Depluym.:nt Fr.:qu.:n .. ·y. kllz
SQ0-23 Surr:i ..· ..• o ..'i. ,,
B()R-7 Suh111a ri1ll' 0. I · 7
1305·R-17 lTASSl Suhrn;1ri1ll' U.O I • J. I
B()R-1.'i < ST,\SS I S11hmari1ll' O.ll:\ - ~ . .'i
!Sl:fl~l:'fl
I U) Tallie 7. 1-lt> :I rccci\'el"S s11i1anlc for possible C'O~IBO-like applkaliuns.
CO!\IBO :1ppli .. ·atiuns. C'o111111u11kation signals th:1t us .. • phonation' of 011! .. ·r mann'-' 111a111111ab
111:1y hare 10 .. ·x..:e .. ·d 11:1tural sour .. ·e k•vcls by up to .~O dB. Sour .. ·e kvcl b :i flm .. ·11011 or th,•
trnnsqtission\ .. ·oded l'r .. ·qu .. ·11 .. ·y :md intended rang•'. Use of unnatur;dly high ,mir..-.. · 1..-v .. ·ls
~hould he limill'd to shurt-dur:11ion t ransmis~ions :md low fre,111en .. ·y sounds.
SIGNAL SYNTHESIS (lJ)
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~ Signal sy1111l ..·s1s has rqirodue ..·d port ions or pilot whale sinusoi,Jal wavci"orm
whistl~·s. The sournb of lat"µ•' wh;ik•s have not h ..•
..·n synth••.;i1.cd. Adcquat•• .;ynthesi~ of hioa
..·oustk sign:lls for l"Vl'rt ..·m1111111nk:.1tions rl·quir ..·s quality ·rl·..·ordings of natural sound~ .
Synthe~ized sign:ils arl' ..:onstru ..·t ..·d frnm and ..:om pared with the naturnl te111pl:1tes. Synthe-"
siz ..·d sig11:1ls must :1ppear n:itural on snn;irdispl:iys and 111us1 sound natural to k'nmvlcdgeahlc
list ..·n..•rs.
..t!tft The for111:1ts pr ..·s..·nting hio:1..:011stk ..·01111111111i..::1tio11s sigu:lls must also he natural.
The in ..·rc:isl' in eriti..::11 hamlwidt!1 with frcqucn..:y in animab' auditory function implies that
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