fossilesque@mander.xyzM to Science Memes@mander.xyzEnglish · 5 个月前oωomander.xyzimagemessage-square7fedilinkarrow-up1137arrow-down15
arrow-up1132arrow-down1imageoωomander.xyzfossilesque@mander.xyzM to Science Memes@mander.xyzEnglish · 5 个月前message-square7fedilink
minus-squarejjagaimo@sh.itjust.workslinkfedilinkEnglisharrow-up7·edit-25 个月前 w_s = 2 * pi * f_s since you need to sample at 2x or more the highest desired frequency to get proper reproduction, it should be w>(1/2)w_s w > (1/2) w_s w > (1/2) 2 pi f_s w > pi f_s
minus-squarezaphod@sopuli.xyzlinkfedilinkEnglisharrow-up3·5 个月前 you need to sample at 2x or more the highest desired frequency to get proper reproduction You need to sample at 2x the desired bandwidth, just bandpass filter the signal appropriately before sampling and you won’t get aliasing.
Shouldn’t it be w>2πF_s?
w_s = 2 * pi * f_ssince you need to sample at 2x or more the highest desired frequency to get proper reproduction, it should be
w>(1/2)w_sw > (1/2) w_s w > (1/2) 2 pi f_s w > pi f_sYou need to sample at 2x the desired bandwidth, just bandpass filter the signal appropriately before sampling and you won’t get aliasing.