Функция wavread. Incorrect chunk size information in WAV file

close all; clear all;
%Формирование исходного сигнала
figure('Name', 'Исходный сигнал', 'NumberTitle', 'off')
N = 8;
Fn = 257/(N-1);
Fd = 2 * Fn;
F = 100/N;
 
[Y, Fs, nbits] = wavread('D:\МАГИСТРАТУРА\БД по оценке качества РС\sw\compressed без искажений\itu G 723.1 5.6kbps\02.wav');%signal(N, t);
t = (0:length(Y(:,1))-1)/Fs;
 
plot(t, Y(:,1));

 function wavchunksizefix( filename )
 
  d = dir(filename);
 
  fileSize = d.bytes;
 
  fid=fopen(filename,'r+','l');
 
  fseek(fid,4,-1);
 
  fwrite(fid,fileSize-8,'uint32');
 
  fseek(fid,40,-1);
 
  fwrite(fid,fileSize-44,'uint32');
 
  fclose(fid);

function wavchunksizefix( filename ) 
  d = dir(filename); 
  fileSize = d.bytes; 
  fid=fopen(filename,'r+','l'); 
  fseek(fid,4,-1); 
  fwrite(fid,fileSize-8,'uint32'); 
  fseek(fid,40,-1); 
  fwrite(fid,fileSize-44,'uint32'); 
  fclose(fid);

function [ output_args ] = Untitled( input_args )
%UNTITLED Summary of this function goes here
%   Detailed explanation goes here
end

...
wavchunksizefix('01.wav');% путь к файлу
[Y, Fs, nbits] = wavread('01.wav');%signal(N, t);
plot(t, Y(:,1));
...