精选优质文档-倾情为你奉上function snr_vec = fftdisto(x, C, varargin)% FFTDISTO compute distortion of sinusoidal signal% SNR_VEC = FFTDISTO(X,C,N)% input:% x signal vector% C number of full sinusoids in X% N length of signal to consider (must be a power of 2)% only N last samples in x are used in fft% output vector:% 1 pwr signal power dB (amplitude 1 - 0dB)% 2 sndr signal-to-noise+distortion ratio (DC omitted) dB% 3 snr only uncorrelated noise (harmonics + DC omitted) dB% 4 sdr sig
