Wondering if any of the audiophiles on this forum might be able to help me out with a rather odd question.
So I run a blog for people with cochlear implants (artificial hearing implants) (Link) and one of the challenges for us (I have one of these implants) is the telephone. A big chunk of the difficulty is to do with the physics and engineering of the phone. A small part is to do with the hearing loss.
I was wondering if anyone knew the spec's in a bog-standard telephone, for the speaker and for the microphone? I'm trying to explain to my readers why even though they may be great at hearing live voices in person, they find the phone is much harder. The blog is all about evidence-based and science-based explanations, so I'm doing my homework at the moment
So far, I've managed to find out that phones use an 8-ohm speaker (cheap 50c jobbie) but the impedance of a speaker doesnt explain why it's a poor quality speaker. Can anyone help either with an answer, or with type of properties of a speaker which influences sound quality?
Hoping there might be some telecommunications engineers on geekzone :)
Cheers
Nathan