snr.m

来自「脊波工具和相关实验以及有关实验数据」· M 代码 · 共 8 行

function r = SNR(in, est)
% To find SNR between input (in) and estimate (est) in decibels (dB).
%
% Reference: Vetterli & Kovacevic, "Wavelets and Subband Coding", p. 372

error = in - est;

r = 10 * log10(var(in(:), 1) / mean(error(:).^2));