Difference between revisions of "Oversampling"

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Oversampling [[PWM]] output makes its output more linear and less noisy (less requirement to filter).
 
Oversampling [[PWM]] output makes its output more linear and less noisy (less requirement to filter).
Note this reason is basically irrelevant on DACs.
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Note this reason is basically irrelevant on DACs, which are pretty linear by nature.
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Revision as of 17:11, 3 January 2019

Template:Audio and signal processing

These are primarily notes
It won't be complete in any sense.
It exists to contain fragments of useful information.
This article/section is a stub — probably a pile of half-sorted notes, is not well-checked so may have incorrect bits. (Feel free to ignore, fix, or tell me)

Oversampling input

Oversampling, a.k.a. supersampling, refers to fetching more samples than you need.


This usually implies you are using and ADC to give fewer but stabler samples than that it actually runs at.


This is useful for a few different but related reasons.


Avoid aliasing, and/or easier input filtering

Imitate higher resolution, and lower noise

See also


Oversampling output

Oversampling PWM

Upsampling DAC