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发表于 2022-11-2 17:16
来自家电论坛网手机触屏版
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suline 发表于 2022-11-2 16:59
这能扯淡,就一个一阶阻容的负反馈,6dB的倍频衰减,最多也是转折频率的差别,哪有那么多自由发挥,你倒说 ...
https://richardhess.com/notes/2006/05/17/cassette-equalization-the-4-db-ambiguity-at-16-khz/
重点给你划一下
If one reads the IEC standard, one is led to believe that proper response will be achieved by simply following the 3180/120 or 3180/70 curves. I believe at this time, that is not the case and that another term has been introduced that modifies that curve, and that term is only documented by the protocols involved in making the test tapes and not actually in the standard. |
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