Irelephant@lemm.ee to Asklemmy@lemmy.mlEnglish · 3 个月前What popular product do you think is modern day snakeoil?message-squaremessage-square596fedilinkarrow-up1296arrow-down14
arrow-up1292arrow-down1message-squareWhat popular product do you think is modern day snakeoil?Irelephant@lemm.ee to Asklemmy@lemmy.mlEnglish · 3 个月前message-square596fedilink
minus-squareHugin@lemmy.worldlinkfedilinkarrow-up2·3 个月前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.
minus-squareintensely_human@lemm.eelinkfedilinkarrow-up1·3 个月前Also 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.
minus-squareintensely_human@lemm.eelinkfedilinkarrow-up1·3 个月前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?
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.
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.
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?