to sound shrill (of a voice); to sound high-pitched and excited; to sound hollow
to get excited; to become restless
《baseball》to be thrown too high; to come in high
緊張で声が上擦った。
His voice became shrill from nervousness.
興奮で声が上擦って、言葉が出た。
Her voice went shrill with excitement, and the words came out.
ライブの時は、歌手の声が上擦るようだ。
When performing live, the singer's voice tends to sound shrill.