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Some OBB locomotives have their PWM systems tuned so that when they change frequency, they're always on a standard musical note. There's one example of that in
by Animats 2y ago
Some OBB locomotives have their PWM systems tuned so that when they change frequency, they're always on a standard musical note. There's one example of that in the video. It's a cute feature, people like it, and it's probably all in software.
- 0_____0 2y agoThey could easily have picked aharmonic intervals, and it would have even been a little easier. But given the opportunity, they chose to make something that added a little bit of color and magic to the world. I love that.
- fransje26 2y agoExplained with a bit of technical detail in an other comment on this post. [1] [1] https://news.ycombinator.com/item?id=41807522 https://news.ycombinator.com/item?id=41807522