This 1969 vintage ad for Hitachi Spectrogram has a full color photos of the visual patterns created by the music of Bach, Ravi Shankar, and Cream with the headline, “Visible music”.
Year Published: 1969
Approximate overall size – inches: 10 x 13
“Hearing a piece of your favorite music and watching it simultaneously in constantly changing color patterns is an exciting experience. We can only describe it as ‘psychedelic.’ What does it is the world’s first ‘real-time acoustic spectrogram color indicator,’ recently developed by Hitachi.
But this new device is more than an electronic substitute for pot.”
This is a 51 yr. old original vintage ad removed from a 1969 publication and is not a reproduction of any kind.