直ちょく音おん

noun

single-kana sound; straight sound

Linguistics term for a mora represented by a single kana without a diacritic or small kana, e.g. か, き, く, け, こ, as opposed to 拗音 (yōon) like きゃ or 促音 (sokuon) like っ.

• 「か」は直ちょく音おんで、「きゃ」は拗よう音おんです。

  'Ka' is a straight sound, while 'kya' is a contracted sound.

• 直ちょく音おんと拗よう音おんの違ちがいを説せつ明めいしてください。

  Please explain the difference between straight sounds and contracted sounds.