Sun and Lion. Sea. And now some new strange image that comes forth. Never eventually falling asleep, only progressing through images to get there. Crowding image upon image until the light is finally blocked out. Sleep, the images don't stop, only change modality.
But, yes, now consider the sounds. A particular voice says a particular name in a certain way. And then nothing but light. What is the sound of the dream? Retention, reverberation; dust, a hollow quiet. The very bottom of the glass where voices don't go.
Truly, the light of a voiceless projector, on a dense, white screen.