If the sounds that you hear are loud, it is probably that your subconscious is trying to call your attention to a certain issue. The sound of a bugle, for example, represents a warning to be more combatant and alerted to the importance of problems. A whistle, on the other hand, indicates that someone has revealed your clandestine plans or that you are too obedient, like does who follow the calls of their masters. Hearing muted sounds or almost imperceptible voices suggests that you should lend yourself more to what your inner wisdom is telling you. However, sometimes dreams incorporate sounds from real life, like the sound of an alarm or traffic from the street. According to those that believe in astral voyages, after the first experience one hears a loud and irritating click, mostly when the return to the physical body is too fast. With time and practice, this disappears.