Oversample or undersample correlated noise?

1. Does oversampling increase noise?
2. What will happen if we oversample or undersample an analog signal while transmitting to digital signal?
3. What is undersampling and oversampling in digital signal processing?
4. What happens when you oversample a signal?

Does oversampling increase noise?

Oversampling Description

As a general guideline, oversampling the ADC by a factor of four provides one additional bit of resolution, or a 6 dB increase in dynamic range. Increasing the oversampling ratio (OSR) results in overall reduced noise and the DR improvement due to oversampling is ΔDR = 10log10 (OSR) in dB.

What will happen if we oversample or undersample an analog signal while transmitting to digital signal?

Oversampling unnecessarily increases the ADC output data rate and creates setup and hold-time issues, increases power consumption, increases ADC cost and also FPGA cost, as it has to capture high speed data.

What is undersampling and oversampling in digital signal processing?

Over-sampling implies having many more samples than the highest frequency of interest, and under-sampling implies we are down-converting the bandwidth of interest with a higher harmonic of the sampling clock (effectively).

What happens when you oversample a signal?

Oversampling reduces or completely gets rid of 3 forms of potential distortion a signal can have: aliasing, clipping, and quantization distortion. Although these forms of distortion are often mild and difficult to consciously hear, they're often noticed when using a lot of processing or pushing a processor harder.