Blame it on the sex of the designers and testers: back in the day, televisions and computer monitors used cathode-ray tubes, which regularly buzzed at an obnoxious 15.73 kHz. But with these departments largely staffed by men, no one noticed it before they hit the sales floor. What made the sound was the transformer in the back of the machine, whimpering like a mad mosquito while it strained against magnetic forces.[*10] These
