Subliminal audio is sound recordings that include messages or affirmations embedded at a volume level below the conscious threshold of hearing. These messages are not consciously audible but are designed to be perceived by the subconscious mind. The purpose of subliminal audio is to subtly and gradually influence thoughts, behaviors, and actions without the listener being explicitly aware of the content. This technique is often used for personal development, such as improving self-confidence, reducing stress, or overcoming bad habits, by repetitively exposing the listener to positive and constructive messages.