[shannongreen]

> Most hearing aids don't deliver sound directly to the damaged ear canal, but also utilise other sound delivery mechanisms. Like induction.

I don't think this is correct. All hearing aids do work this way, and I also don't know of any way that (electromagnetic?) induction could be used to deliver sound.

In a person with hearing loss, not all frequencies are affected equally. Hearing aids can compensate by

1. Amplifying the affected frequencies (this is by far the most common approach) or

2. Compressing and pitch shifting the sound to a range that the user has better hearing.

[zaarn]

When I studied at Uni, some lecture halls had induction, where the sound recorded by the microphone would be transmitted via an inductive system throughout the entire room and compatible hearing aids would be able to use that sound instead of having to boost the audio from the speakers throughout the hall.

[jrace]

That is input via induction (there is also FM and BT transmitters)

The GP was referring to induction output - of which comprises a minority of hearing devices.

[catalogia]

> [electromagnetic] induction

Maybe they meant [bone] conduction?