Parthenope

When the sirens didn't manage to lure in Odysseus' ship to make it crash on the rocks in the shallows due to Odysseus' cleverness, Parthenope threw herself into the sea and drowned. The city of Naples was also named Parthenope in ancient times, because it was founded on the spot where Parthenope's body washed up on shore according to legend.

I am afraid ops does not mean voice. It's the face. The appearance.