3D imaging


I I started thinking about this yesterday. What makes speakers produce a 3D image? I figured the first thing is the recording itself. I'm guessing mic placement has a lot to do with this. Next I would imagine is room,and speaker placement. Downstream gear certainly has to have some effect on this. Does the crossover have something to do with providing this "illusion " for lack of a better term? 
     Now please understand,I don't have anywhere near the technical knowledge a lot of you folks have,so as you explain this phenomenon,please dumb it down for me! 
    Thanks in advance,
        Ray
128x128rocray

Showing 3 responses by erik_squires

Rocray -

Of course, to preserve the location data you need good room acoustics. I strongly recommend GIK accoustics. Great advice and very cost effective products.
What makes speakers produce a 3D image is being symmetrically equidistant and pointed towards the listener. Period.



While precisely balanced speakers are important, not all speakers sound at their best this way. 

Quite frankly, some speakers sound better off-axis. A lot of high quality tweeters have resonances which you can tame by toeing the speakers out.  Further, if you have a very small room, sometimes crossing the speakers in front of your head reduces side reflections significantly and improves imaging.

Lastly, as some speaker developers have discovered, despite our best intentions, sometimes listening below the tweeter axis is also beneficial.

The final judge is your ears and your circumstances.


Best,
E
If you want to do some research, look into Head Related Transfer Functions.

For most speakers, having good room acoustics is key.