In electronics and communications, the conditions in which the impedance of a load does not match the impedance of the source to which it is connected. In recording, mismatch will cause a loss of signal level and distortion.

• 在电子技术和通信技术中,负载的阻抗和连接负载的信号源的阻抗不匹配的情况。在记录技术中,失配将会引起信号电平的损失和失真。同impedance mismatch。