2026-03-07 00:00:00:03014378910http://paper.people.com.cn/rmrb/pc/content/202603/07/content_30143789.htmlhttp://paper.people.com.cn/rmrb/pad/content/202603/07/content_30143789.html11921 本版责编：陈 娟 何宇澈 张一夫 董泽扬 施 钰
Remember that the pure fifth you get from harmonics is a frequency ratio of 3/2. In 12-TET, however, you make a fifth by adding up seven semitones. This means that you multiply your frequency by the 12th root of two seven times, which comes to about 1.498. That’s close to 3/2, but it’s not exact. As a result, fifths in 12-TET sound a little flat compared to what your ear is expecting from natural harmonics.
，这一点在新收录的资料中也有详细论述
OpenAI’s CEO, Sam Altman, told employees on Tuesday that his company does not control how the Pentagon uses their artificial intelligence products in military operations. Altman’s claims on OpenAI’s lack of input come amid increased scrutiny of how the military uses AI in war and ethics concerns from AI workers over how their technology will be deployed.
2025年7月15日，华中某省会城市上空，天空蔚蓝，白云朵朵。视觉中国/图