Howtosignalprocessing
- What is oversampling ratio in ADC?
- What is oversampling in DAC?
- What is the oversampling factor?
- Does oversampling improve SNR?
What is oversampling ratio in ADC?
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 is oversampling in DAC?
Simply put, oversampling is processing audio at a higher multiple of the sample rate than you are working at. The sample rate we work at must be at least twice the highest frequency we wish to record or process.
What is the oversampling factor?
Oversampling factor specifies the factor by which the global clock signal is a multiple of the base rate at which the model operates. Use the Oversampling factor to integrate the DUT with a larger system that supplies timing signals to other components in the system at the global oversampling clock.
Does oversampling improve SNR?
The samples obtained by oversampling are low-pass filtered and decimated using a digital filter to achieve a reduction of the quantization noise. The signal at the frequency band of interest is not affected by the filter, and the result is an improved SNR. The improved SNR results in a higher ENOB performance.
