1- To hear whispering in a dream suggests that we need to listen to someone or something very carefully. It may also mean that we do not have the full information av ailable to us about a situation in our waking lives.
1- Sound in dreams can often manifest as the opposite quality to that which is required. Thus, whispering could be interpreted as a shout for attention.
2- Hidden Information. Occult Knowledge.... Ten Thousand Dream Dictionary