The coded images that let advertisers target all our senses at once

The coded images that let advertisers target all our senses at once: Here, only the drawings within the space defined by the headphones are illustrated in colour. The positive feelings that we tend to associate with colourfulness (as opposed to black and white) are arguably used to convey a positive judgement about the quality of sound that the advertised headphones reproduce. In other words, this advertisement is an example of a visual synaesthesia by which sound is described in terms of colour.