I realize that it probably sounds a bit different for everybody, and maybe for some people it doesn't make a sound at all, but should ear equalization always sound the same for a given person? For me, it normally sounds like a squeak, but yesterday it sounded totally different, like shampoo suds crackling in my ear. I was still able to equalize, so I continued that dive, below 60ft or so, any further equalizations resulted in my familiar squeak. From what I've read, both sounds might occur during normal equalization, but is it unusual for the sound to be completely different from the usual on occasion?