To reiterate that time: visualize sampling the upper spectrum such that the new sampling price is at half of $f_ s1 $, proper in the center of the "significant frequency" spectrum elements we depicted. That means then which the spectrum centered about this new sampling amount should then be similar https://pgingurgaonfemale.home.blog/2025/07/28/top-student-friendly-pg-in-gurgaon-sector-14-only-at-osmstays/