A microphone stands for the chance to speak and be heard. Tradition reads a dead microphone as frustration at being silenced, and a live one as an invitation to speak up.
Does the traditional reading fit your dream, or did it mean something else to you?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.