Place this clip right after the over-explaining line ends, as the closing reply in the edit. Follow an unwanted explanation with no no wait wait first if someone tries to continue, then end the sequence here so the conversation stops on your answer.
이 사운드에 대해
The clip is a short spoken German line, 'ja ich weiss', meaning yes I know, delivered as a flat one-second reply. It gives a dry, slightly exasperated feeling, like you are politely shutting down an explanation you never needed while keeping the exchange light and unmistakably dismissive.