The last word is not spoken from a human throat.

I have never heard such agony from a human throat.

He had never heard such a sound from a human throat.

He had never imagined that a human throat could make such a sound.

The call was lower than anything that should have come from a human throat.

I felt as though I'd swallowed something that had no business going down a human throat.

The sounds could almost have come from a human throat, though they made no sense.

But the sound was not one that could ever have emerged from a human throat.

It was a sound that should never have come from a human throat.

It may have been the worst sound that ever left a human throat.