Thank you very much for that question. I would be happy to answer it to the best of my ability.
Acoustic shock presents symptoms like a concussion where you have headaches, nausea, difficulty with this fog we're talking about. I'm sure you know that concussions are cumulative in impact over time. As you sustain one after the other, it takes a lot longer to recover.
As to the statistics, I believe that CAPE is best placed to speak to that because the staff interpreters are providing incident reports to the Translation Bureau. The International Association of Conference Interpreters in Canada does not compile such statistics, but we are getting feedback from the membership to that effect—tinnitus, hypersensitivity to loud noises and that kind of thing.
You had a second question as to hybrid meetings. Yes, they are the most serious of the issues because when you're meeting in person—we are all familiar with that experience—what happens is that, on top of that, you have people joining the call over the phone lines, so you are dealing with different technologies. You have the equipment that has been put in place for the in-person meeting; you have, on top of that, a layer of equipment that is being provided for the interpretation; and then finally, you have the telephone equipment on top of all of that, to put it in simple terms.
All of this is not necessarily compatible. When people are joining by phone, they can be joining on a land line, but there aren't too many of those left. Most of them are on cell phones. Some are in their cars driving with a hands-free system. It's a matter of the inputs. The inputs are various, and because of this, the quality of the sound is degraded and makes our work all the more difficult. That is when you can have a feedback loop that causes acoustic shock.