How to realize binaural effect in stage performance

when the sound source (including complex trunking signals) is biased to the left ear or the right ear, that is, it is deviated from the central axis in front of the two ears, the distance from the sound source to the left ear and the right ear is different, which will lead to differences in sound level, time and phase. This slight difference is perceived by the human ear's hearing, transmitted to the brain, compared and analyzed with the existing hearing experience stored in the brain, and the judgment of sound orientation is obtained. This is the binaural effect < P > On the stage, two microphones not too far apart are connected to two amplifiers respectively, and then the amplified variable current of the amplifier is connected to two speakers corresponding to the microphone positions in another room. In this way, when an actor walks and sings from left to right on the stage, the audience in another room will feel as if the actor walked and sang from left to right in front of him. If two recorders are used to record the audio current sent from two microphones at the same time; When playing, put the two speakers playing at the same time in the position corresponding to the microphone, and the sound you hear will have a good three-dimensional effect, which is two-channel stereo recording. Nowadays, most stereo magnetic recorders have two channels. Its recording head and playback head are made of upper and lower coils, and the core stack thickness of the head is more than half narrower than that of the common tape recorder, and the magnetic track on the tape is more than half narrower than that recorded by the common tape recorder. In this way, there are four tracks on a tape. When recording, the sound is converted into audio current by two microphones arranged on the left and right, and then amplified by two sets of amplifiers in the recorder, and sent to two sets of coils of the recording head respectively. When the tape passes through the recording head, the recording of two channels is recorded on two tracks of the tape at the same time. During playback, when the tape passes through the playback head, the two sets of coils of the playback head respectively induce the varying currents of two tracks, which are amplified by two sets of amplifiers respectively, and then the sound of two channels is replayed by two speakers arranged in front of the left and right of the audience respectively, so that the audience can get a stereoscopic impression.