Meaning of 促音(そくおん) in Japanese

Examples of 促音, そくおん in a sentence

• 拗音（ゃ　ゅ　ょ）と促音（っ）の出し方も、加えていただけると参考になるかもしれません。

  I think it might be useful if you could add how to output the diphthongs (with small ya/yu/yo) and geminate consonants (with small tsu).