Irelephant@lemm.ee to Asklemmy@lemmy.mlEnglish · 5 months agoWhat popular product do you think is modern day snakeoil?message-squaremessage-square575fedilinkarrow-up1288arrow-down14
arrow-up1284arrow-down1message-squareWhat popular product do you think is modern day snakeoil?Irelephant@lemm.ee to Asklemmy@lemmy.mlEnglish · 5 months agomessage-square575fedilink
minus-squareHugin@lemmy.worldlinkfedilinkarrow-up2·5 months agoFrequency folding is the term used in DSP no need for quotes. The Nyquist frequency is commonly referred to as the folding frequency. And yes frequencies above the Nyquist folding frequency alias into lower frequencies. A simple low pass filter prevents this however. Properly filtered digital sampling produced a more accurate reproduction of the frequency range with less distortion then an analog signal.
minus-squareintensely_human@lemm.eelinkfedilinkarrow-up1·5 months agoI don’t disagree that there’s noise in analog signals too, limiting their information capacity. But that’s coming from the limitations of our physical implementations’ quality, no?
minus-squareintensely_human@lemm.eelinkfedilinkarrow-up1·5 months agoAlso I used quotes to refer to your words, not to throw shade at a term’s validity. I use quote marks to quote. If by “x” you mean … Doesn’t mean the same thing as just randomly surrounding it with quotes in normal use means.
Frequency folding is the term used in DSP no need for quotes. The Nyquist frequency is commonly referred to as the folding frequency.
And yes frequencies above the Nyquist folding frequency alias into lower frequencies. A simple low pass filter prevents this however.
Properly filtered digital sampling produced a more accurate reproduction of the frequency range with less distortion then an analog signal.
I don’t disagree that there’s noise in analog signals too, limiting their information capacity. But that’s coming from the limitations of our physical implementations’ quality, no?
Also I used quotes to refer to your words, not to throw shade at a term’s validity. I use quote marks to quote.
Doesn’t mean the same thing as just randomly surrounding it with quotes in normal use means.