They may have no auditory apparatus.
But it hurt the less-sophisticated human auditory apparatus.
Let us suppose that binary oppositions are natural in the sound system of a language, that because of the physical properties of our auditory apparatus it is easier for us to distinguish x/not-x-type contrasts.
They know that the Sagoths have a spoken language, but they cannot comprehend it, or how it manifests itself, since they have no auditory apparatus.
Frank also did work on the oscillatory characteristics of the auditory apparatus of the ear and the thermodynamics of muscle.
How could a creature without auditory apparatus respond to sound waves?
The cause is thought to be thermoelastic expansion of portions of auditory apparatus.
He was the first to work out the exact natural positions of the auditory apparatus of animals and humans.
But the Tellarites, despite their apparently lack of auditory apparatus, had rather sharp hearing.
Again we do not know whether these sensations originate in the auditory apparatus and/or in the auditory cortex, or whether they are flashes of direct, molecular sensations in other areas.