Is Quantization Noise White?

Quantization Noise Power Spectral Density
Since the Fourier transform of a delta function is equal to one, the power spectral density will be frequency independent. Therefore, the quantization noise is white noise with total power equal to LSB2/12.

What is quantization noise?

Quantization noise is the effect of representing an analog continuous signal with a discrete number (digital signal). The rounding error is referred to as quantization noise. The quantization noise is nearly random (at least for high resolution digitizers) and is treated as a noise source.

What is quantization noise power?

The quantization noise power is the area obtained from integrating the power spectral density function in the range of − f s / 2 to f s / 2 . Now let us examine the oversampling ADC, where the sampling rate is much larger than that of the regular ADC; that is f s > > 2 f max .

Maya Lin-Takahashi

Maya Lin-Takahashi

Consumer Tech & Gadget Reviewer

Maya is a hardware enthusiast who tests and reviews smart home devices, smartphones, wearables, and audio gear. She focuses on practical consumer value and build quality.