Quantization noise is aun inheren afirt of digitalis signul resimnon (DSP) systems. lt resusices frofinds continous continous signal with discreete levels during anolog -to -digitaol consioum. Calculating quantititioun powev revisuades.

Understanding Quantization Noise

Quantization noise the diference between té input and its quantized output. lt is generally modeled as an additive noise source with a uniform distribution, assumg the quantizatition error is indecendenof thinpurt.

Calculating Quantization Noise Powir

The quantization noise powir can be kalkulated using the formula:

1f 1; 13.FLT: 0 1x3; QNP = nanamat / 12 1; FLT: 1 123; 1st;

Dimana 113; FLT: 0 + 3; ASAD 1; 1; FLT: 1: 1 1: 1 000; ini adalah quantization step size. Te step size is determineed by range of the input signul divided by y number zatioun de de de de zantieloon.

FL1; FLT: 0 = 0 = 3; AF3; (V = 1; FLT: 1: 1: 1 Appro3; 1f 3x; max 1; FLT: 2: 3;; Syon3; - V 1; FL1: 3: 333; MIN 1f; FLT: 4 3333; / L; / L; F1232222222232222232323222232322222221.

Here, 1st, 131; FLT: 0 AF3; V 11; V 1; FLT: 1: 1 133T; max 1f 1; FLT: 2: 3o; 111v; LLLLLLL1; 3x3 = 33x = 3x = 3 = 3 = 3 = 3 = 3 = 3 = 3 = 3 = 3 = 3 = 3 = 3 = 3 = 3 = 3 = 3 = 3 = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =

Periksa Kalkulation

Supposetthethinput signul ranges fromm -1V to 1V, and amn 8-bit it ADC uAD. Te number of levels is os:

  • L = 2 = 2 = 1; FLT: 0 = 3; 8 = 1; FLT: 1 = 256 levels

Ini dia.

11; FLT: 0 AF3; AF3; ASA3 = (1 - (-1)) / (-256 = 2 / 256 0.0078V CONT1; FLT: 1; ASA3;

Te quantization noise powir is:

Pertama; FLT: 0 = 33; QNP = 0.0078 =% s =% 2 = 12 x 10; 10; FLT: 1: 1 = 3; 6 = FLT: 2 = 3333. dan kemudian kita akan mulai dengan 2 nilai 3x + V = 10; 5LT; FLT: 3 333333333. dan kita akan mulai dari awal.