聴ちょう音おん機き

ちょ

う

お

ん

き

Meanings

noun

sound locator; acoustic detector; hydrophone

A device for detecting and locating sound sources, used in military, maritime, and scientific contexts. 聴音機 is the more common spelling for equipment.

潜せん水すい艦かんを探たん知ちするために聴ちょう音おん機きが使つかわれた。
A sound locator was used to detect the submarine.
この聴ちょう音おん器きは水すい中ちゅうの音おとを集しゅう音おんできる。
This hydrophone can pick up underwater sounds.

Written forms

聴ちょう音おん機き
Standard kanji spelling for a sound-detection device.
聴ちょう音おん器き
Alternate kanji spelling; 器 suggests an instrument or tool.

Kanji

聴listen, headstrong, naughty
音sound, noise
器utensil, vessel, receptacle
機loom, mechanism, machine

Similar words

ソナー
ソナー (sonar) is a more modern and common term for sound navigation and ranging, while 聴音機 is an older or more specific term for a passive listening device.
水すい中ちゅう聴ちょう音おん器き
水中聴音器 explicitly means underwater listening device (hydrophone), whereas 聴音機 can refer to both air and underwater sound locators.

Etymology

Compound of 聴音 (listening to sound) + 機/器 (machine/device). The exact historical origin is uncertain, but it likely emerged in early 20th-century military and maritime technology contexts.