Howtosignalprocessing
- How do you calculate oversampling ratio?
- What is the oversampling ratio?
- What is 8x oversampling?
- Does oversampling improve resolution error?
How do you calculate oversampling ratio?
Oversampling Description
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 the oversampling ratio?
Oversampling Rate – this is a resampling rate based on the original sampling rate. For example, if the original sample rate is 48 kHz, an oversampling rate of 2x infers a resampling or upsampling rate of 96 kHz. Upsampling – the process of resampling a signal at a higher rate than the incoming signal.
What is 8x oversampling?
The audio industry has now standardized at an 8x oversampling rate, which means a CD's sampling frequency is increased to 352.8kHz before it enters the digital-to-audio converter. This effectively moves the aliasing frequencies to values near 300kHz, much higher than the original 22.05kHz.
Does oversampling improve resolution error?
Oversampling is capable of improving resolution and signal-to-noise ratio, and can be helpful in avoiding aliasing and phase distortion by relaxing anti-aliasing filter performance requirements.
