To reiterate that time: consider sampling the upper spectrum such the new sampling level is at 50 % of $f_ s1 $, proper in the middle from the "significant frequency" spectrum factors we depicted. Which means then that the spectrum centered about this new sampling amount must then be similar https://pginsector14gurgaon.news.blog/2025/07/29/clean-and-secure-girls-pg-in-sector-14-gurgaon-book-via-osmstays/