Categories Media Technology New technology – Highly focused sound Post author By Dave Post date December 23, 2007 No Comments on New technology – Highly focused sound In New York City a billboard emits highly focused sound that resonates within the skulls of passersby. The Audiohiliac ← Subliminal Advertising was a hoax → 62 mile log flume Leave a ReplyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Δ This site uses Akismet to reduce spam. Learn how your comment data is processed.