One possible meaning could be a sound that indicates death or something related to it. For example, in some horror stories, a 'dead sound' might be a low moaning or a creaking that is associated with a haunted place or a ghost. It gives a sense of dread and lifelessness.
It's hard to say. Maybe it was inspired by some real elements, but not a direct retelling of a specific true story. We might need more research or official statements to know for sure.
I'm not sure specifically which 'dead sound true story' you're referring to. There could be various stories related to that name. It might be about a particular musical event where the sound went 'dead' in an unexpected way during a performance, or perhaps it's related to some spooky or mysterious occurrence where a 'dead' or muted sound played a crucial role in the true events that unfolded.
I'm not entirely sure what specific 'dead sound' you are referring to. It could be a very specific term in a certain field, like perhaps a particular audio phenomenon. Maybe in a spooky context, it could be about strange, muted sounds in a supposedly haunted place. But without more context, it's hard to share a definite real story.