You are here: Home › Media › New technology – Highly focused sound ← Subliminal Advertising was a hoax 62 mile log flume → New technology – Highly focused sound In New York City a billboard emits highly focused sound that resonates within the skulls of passersby. The Audiohiliac Leave a Reply Cancel reply Your email address will not be published. Required fields are marked *Comment Name * Email * Website Notify me of follow-up comments by email. Notify me of new posts by email. This site uses Akismet to reduce spam. Learn how your comment data is processed.