The idea behind 3D sound is that instead of hearing noise as the left and right of a single stereo track, you would hear sound as if it came from physical space. The best example of 3D Sound that I know of is called the “Virtual Barber Shop“. The video uses the sounds of a Spanish or Italian barber shop to illustrate how sound can be represent space as well. Now, here is how you can do it.
Using two diaphragm microphones, each inputting the left or right of a single stereo track, you can create 3D sound. The key is mic placement and direction. You need to have the mics at the same level, spaced about 8 inches apart while facing away from each other. This simulates the positioning and orientation of your ears, using your head as the listening point.
To hear my 3D sound experiment, with headphones, press play below.
Here is the equipment and settings I was using to produce this effect:
- Zoom H4n Recorder: 1/2 Link On and MS Stereo Matrix Off
- Studio Projects B1: -20dB
- AKG Perception 220: -20dB