Stereo refers to sound with a three-dimensional effect. The sounds emitted by nature are stereo, but if we reproduce these stereos after recording, amplifying, etc., all the sounds are played out from a speaker, and this playback sound (compared to the original sound source) is not stereo. Too. At this time, since various sounds are emitted from the same speaker, the original sense of space (especially the spatial distribution of the sound group) also disappears. This replay is claimed to be mono. If the entire system can restore the original sense of space to a certain extent from recording to playback (it is impossible to completely recover), then this kind of playback sound with a certain degree of azimuth and other spatial distribution characteristics is called acoustic technology. Stereo.
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