This paper will no doubt contain dozens of images representing various playback models. The image above will be considered a master that was recorded without a room. By that I mean, if the above image were sound, it would be part of the master tape . Study the image closely. The black represents space or silence .
Pure black is a noise floor of zero.
In contrast, the objects floating represent point sources of sound. Together this is called a soundstage . The amount of light level of these objects represents sound pressure commonly measured in decibels. I didn't make one for example, hot pink. If you study the wavelengths of the 20,000 colors used in this image you will see they are harmonically aligned.