What do l and R of earphone mean?

Generally speaking, it means to distinguish between left and right .

When the music starts L Left R The right earphone will form a sound field in the head melon seeds when it is plugged into the ear to hear the sound of the correct phase : Hierarchical , Far and near , Have a sense of location … This will produce a music effect called stereo in your head , This effect is usually called stereo sound field .

Many stereo audio devices also distinguish between left and right channels , Able to build a regional stereo sound field . So earphones are also divided L Left R Right phase , Distinguish the left and right channels , So what we hear is a three-dimensional sound field with correct phase ！

Another function is to locate the sound field : When playing games , Wearing earphones makes it easy to listen to the voice and debate , If L、R Wear it upside down …… The sound field heard does not match the picture seen .

Say a few words simply .