Effective Subliminal Sounds must run as underlying layers of continuous suggestion, often at the extreme fringes of perceptibility, but within the 150 to 10,000 KHz spectrum permitted by radio station compression limiters.

The Nu-Zymes Target Audience was Bilious Persons Aged 45 to 94.

The Superliminal Sound promises a Cheerful Dessert after a normal nine course meal.  Note the barely audible hints of agonizing gastrointestinal misery before Nu-Zymes.

The much deeper Subliminal Sound - a crowd cheering on the winner of the 1977 Boston Marathon - is audible only to the subconscious ear. (It audio-legally disclaims a possible side-effect: The Runs.)

Does Subliminal Radio Work?

The commercial played to 137,650 North Carolinians at an average frequency of 12.6 over five weeks. Surely that was ample time for both layers of Subliminal Audio to sink deep into the subconscious and prompt involuntary, reflexive calls to 1-800-823-8260.

Sadly, due to severe dynamic range compression, and perhaps to the ready availability of cheaper alternative remedies at any 7-11, this particular exercise in deep-psyche Subliminal Radio generated only three phone calls.

The evidence is far from conclusive, but it suggests that Effective Results in Radio are more likely to ensue from the straightforward, if somewhat mundane, application of strategic thinking, clear presentation, and Good Taste.

Subliminal Persuasion remains elusive in Radio. However, it seems to work fairly well on-line.  Deep layers of subtle provocation can keep the visitor's eyeballs glued to your page.

QED.