Stereo principle The working principle of stereo.

1, Stereo comes from the principle of two channels, which brings people the aesthetic enjoyment of sound, which is incomparable to mono sound. Stereo technology develops so fast that it is recognized by people because it gives listeners a sense of presence and realism. The main reason is that the sound radiated by two speakers shapes the sound source orientation, that is, stereo.

2. People's hearing involves not only the auditory organs themselves, but also comprehensive factors such as physiology, physics and psychology such as vision and even touch.

3. In addition to the subjective feelings of loudness, tone and timbre, the human ear also has the spatial impression of the sound source, that is, the ability to locate the sound source.

4. People have two ears, and there is a certain distance between them (about 17cm). If a sound source deviates from the main axis in front of the listener, the sound reaching the two ears will be different, and the auditory system can judge the direction of the sound source by eradicating these differences. This theory is the "binaural effect" theory.