Re:Audiophile forum debating which versions of memcpy had th...
by HeyLaughingBoy on Monday March 13, 2023 @02:05PM
(#35139828)
CRT whine is at a much lower frequency, though. It's within (average, young) human hearing range.
I once debugged a switchmode power supply this way. I was in my late 20's-early 30's and walked into a room where an engineer in his 50's was testing a power supply. First thing I said, was "what's that annoying noise? Oh, it's coming from your test bench." He blinked at me, but immediately realized that I could hear a high frequency noise he couldn't and that it was related to the problem he was troubleshooting.
IIRC, the problem was that his oscillator was running at a lower than expected frequency: it should have been well outside hearing range but was actually just barely within mine.
I once debugged a switchmode power supply this way. I was in my late 20's-early 30's and walked into a room where an engineer in his 50's was testing a power supply. First thing I said, was "what's that annoying noise? Oh, it's coming from your test bench." He blinked at me, but immediately realized that I could hear a high frequency noise he couldn't and that it was related to the problem he was troubleshooting.
IIRC, the problem was that his oscillator was running at a lower than expected frequency: it should have been well outside hearing range but was actually just barely within mine.