You will say that it might have been the voice of an Asiatic — of an African. Neither Asiatics nor Africans abound in Paris; but, without{l} denying the inference, I will{m} now merely call your attention to three points.{n} The voice is termed by one witness ‘harsh rather than shrill.’ It is represented by two others to have been ‘quick and unequal.’ No words — no sounds{o} resembling words — were{p} by any witness mentioned as distinguishable.
From this point, we can see that Dupin see this case from the other side. He did not take all the testimonies as the proof or observation but try to link them together to see the whole picture of the murderer.