In sound recording,a low frequency noise usually produced by regular variations in the speed of a system's mechanical component. 錄音技術(shù)中的一種低頻噪聲,通常由于系統機械部件的速度有規律變化而引起。
In recording, a feature of some tape recorders that permits the tape movement to be stopped without switching from the play or record settings. 在錄音技術(shù)中,某些磁帶錄音機具有的一種特殊功能,它不需從放音或錄音設定位置作切換就可使磁帶停止運動(dòng)。