All 10 Uses

acoustic
in
The Hunt for Red October
(Auto-generated)

It could identify ships by name from their individual acoustical signatures, much as one could identify the finger or voice prints of a human.†
Chpt 5.
Second, the deeper water would make for better acoustical conditions, opening up to them the distant sonar convergence zone.†
Chpt 5.
Captain, what you just heard was the acoustical signature of a Russian submarine.†
Chpt 7.
CONTACT EVIDENCED UNUSUAL REPEAT UNUSUAL ACOUSTICAL CHARACTERISTICS.†
Chpt 7.
They're going to have to get used to a wholly new acoustical signature.†
Chpt 8.
The Politovskiy's acoustical signature was labeled Alfa 3 by the Americans.†
Chpt 8.
In better acoustical conditions they could have heard conversations.†
Chpt 12.
'Without using acoustical devices.'†
Chpt 12.
The caterpillar acoustical signature is unique, Comrade.†
Chpt 17.
In the sonar room, Bugayev had powered up the acoustical jamming gear as soon as the fish were launched.†
Chpt 17. *

Definitions:

(1) (acoustic as in: auditorium acoustics)
sound quality or its study, based on how sound bounces off surfaces

For example, acoustics affect whether a voice on stage can be heard clearly in the back of an auditorium, or how loud and echoey a busy restaurant feels.
(2) (acoustic as in: acoustic guitar)
of a guitar or other musical instrument: not using electricity to amplify sound
(3) (meaning too rare to warrant focus)