Black Friday: lifetime access is on a special offer in the app, until November 30. Black Friday: special offer on lifetime access, until November 30. Download
소리장도를 사용하여 소리를 시각적으로 표현할 수 있습니다.sorijangdoreul sayonghayeo sorireul sigagjeog-eulo pyohyeonhal su issseubnida.You can visually represent sound using a sound map.