What the senior engineer knew was the connection between two sound components — such as receiver, mixer, amplifier, and speakers — went beyond two copper wires and some insulation.
These are hooked to a receiver, an amplifier, speakers, a mixer and various other pieces of electronic music equipment.
它连接着一个接收器，一个喇叭筒，扬声器，混合器和各种其他不同的电子音乐仪器。
3
This paper investigates various combined frequency interference in integrated and double-converted transceivers, and points out that the reason is the non-linearity of frequency mixer and amplifier.