Question

It was a strange voice as though each sound was different in this room meaning

Answer 1

The voice heard was very unusual as if every sound in that particular room was different.

Answer 2

Answer:

Here sound means the thoughts of the author about the things that came from her memories.Since all her belongings were present in a strange atmosphere therefore she heard her strange voice. Moreover, a lot of memories were related to her belongings therefore each sound was different in the room.