Headphones

…Earplug-type headphones have inferior sound quality compared to on-the-head types, but because they are small and lightweight, they are often used for listening to hearing aids and portable radios, and for simultaneous interpretation at international conferences. On-the-head types are called headphones, and are divided into closed and open types. Closed types include the circumaural type, which covers the area around the auricle with an earmuff, and the supraaural type, which is pressed against the auricle, and are designed to minimize sound leakage as much as possible. …

*Some of the terminology that mentions "headphone" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…耳栓型は載頭型に比べて音質は劣るが，小型軽便であるので，補聴器やポータブルラジオなどの受聴，国際会議場における同時通訳などに多く用いられる。載頭型はヘッドホンheadphoneと呼ばれ，密閉型と開放型に分けられる。密閉型には耳当てで耳介の周囲を覆う耳覆い型circumaural typeと耳介の上から押し当てる耳当て型supraaural typeとがあり，できるだけ音の漏洩（ろうえい）を少なくしている。…

※「headphone」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報