The illusion of a virtual sound source outside the listener's head is created.

Adam wasn't listening, at least to any voices outside his own head.

It changes nothing about the world outside your head.

The noise outside her head was no worse than the clamor inside.

It started to rain, in the world outside his head.

She couldn't tell if the voice was inside or outside her head.

The rush became a deep howl, inside and outside her head.

Do hallucinations really exist in the external space outside your head?

It was like a headache outside your head, trying to get in.

And there was no real problem outside his head.