appliance sounds
No. Don't leave, Erik!

You have captured the fine details of many of the various popular dryers and described them very effectively.
I like your descriptions. Right on target with the General Electric dryers' sound, "It always sounded like it meant business, not harsh, but effective." Wow. You are exactly right, the GE dryers do have a distinctive sound. You described it very well, in a creative way most of us would never had thought of.
A little bit off the subject, but General Electric dishwashers, the older pre-90's models also had a very distinctive sound that I found very comfortable, comforting and familiar. Also, just exactly as you said, "effective, but not harsh." The Maytag Reverse Rack dishwashers surely sound like they mean business, but in more of a "airplane engine in a rainstorm type sound". (Maybe that's why they called it, JetClean)
On the other hand, the General Electric filter-flo washers, I find a little raucous,when it's in a living area. The the water fill is noisy, the brake drum clap a little loud (not nearly as loud as the Westinghouse front loader though) and the speed changer on the clutch sometimes rattles a little, like Malcolm pointed out. The actual agitation sound is really cool. It also has that sort of on-task, meaning business, sound. But just as you say, not harsh, like a Frigidaire 1-18. Well, if not harsh, then maybe the Frigidaire could be described as VERY intent sounding.
My mom had a late 70's GE with the straight agitator (activator) and she said the sound of the agitation brought back memories of her grandmothers wringer washer when she was a little girl.
Maybe GE engineers have sound engineers who make sure their appliances sound pleasant and effective, hehe.
[BTW, totally off subject. If you want to see some pictures of NASA Astronaut, Greg Johnson, who piloted the final Space Shuttle Endeavor mission. Go to "Dirty Laundry" thread 42626. I was Greg's teacher for physics and chemistry, when he was in high school, and I found some old pictures I had taken of him and his class when he was 17 years old.]