ジャカジャカ

adverb

noisily (playing an instrument); blaring

Describes loud, energetic, often continuous playing of an instrument, especially guitar or drums.

• 隣となりの部屋へやからギターの音おとがジャカジャカ聞きこえてくる。

  I can hear the sound of a guitar being played noisily from the next room.

adverb

incessantly; on and on

Used for actions done without pause, often with a sense of relentlessness or annoyance. Can apply to talking, working, or other repetitive activities.

• 彼かれはジャカジャカしゃべり続つづけて、全ぜん然ぜん話はなしが終おわらない。

  He keeps talking on and on, and the conversation never ends.