Why am I getting "too many output arguments" when I am Quantizing an input speech?
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clear
clc
%----------------- Quantization -------------------------------------------
%Number of level
level=32;
%TYPE OF QUANTIZATION
% Choose to graph:
% 1 = Univorm
% 2 = Mu-law
% 3 = A-Law
option_quantization=1;
%----------------- Modulation ---------------------------------------------
%TYPE OF MODULATION
% Choose to graph:
% 1 = BPSK
% 2 = QPSK
% 3 = BPSK and QPSK
option_modulation=3;
%Loading voice
[x,fm]=audioread('4.m4a');
%Fundamental frequency
N=floor(0.02*fm);
C=xcorr(x,N,'coeff');
N1=floor(0.002*fm);
[x0,vmax]=max(C(N+N1:2*N+1));
t0=(vmax+N1)/fm;
f0=1/t0;
fundamental_frequency=strcat(num2str(f0),' Hz');
%PLOT
%Plotting input signals (voices)
figure(1)
plot(x)
axis([ 0 4500 min(x) max(x) ])
title('Input signal 1');
% Playing voices
disp('Playing input signals');
soundsc(x,fm);
pause(3);
%Quantization
[y1, x2, errorquantization] = quantize(x,option_quantization, level);
%Quantization error
quantization_error = strcat(num2str(errorquantization),' %');
%Variables to plot
xg=x2; yq=y1;
xq=x; fmq=fm;
Error I am getting:
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/814234/image.jpeg)
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回答(1 个)
Yongjian Feng
2021-11-26
It looks like quantize only returns one output, not 3
help quantize
2 个评论
Adam Danz
2021-11-26
@Zanobia Masih I removed the flag because this answer perfectly addresses your question. It looks like you have a new, more complicated question. You may be looking for the function quantiz but it's unclear what your inputs represent. Where did you get this code?
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