problem with fread,matrix arguments

i'll need some help here...well i have a folder who's inside there are 8 subfolders with names ('aa','ah','ax' 'eh' 'ih' 'ix' 'ow' 'ux')each subfolder has 60 .pcm files..and i want to read them..here's my code for phoneme 'aa'..the problem is when i write sig(k,i) as a matrix there's an error and i can't fix it..

%mycode
TrainFile=cd('C:\Users\panagiotis\Documents\MATLAB\patreco_project\training');
phonemes={'aa' 'ah' 'ax' 'eh' 'ih' 'ix' 'ow' 'ux' };
cd(phonemes{1});
data=dir('*.pcm');
for k=1:60
for i=1:length(data)
   fid=fopen(data(i).name,'r');
   sig(k,i)=fread(fid,inf,'int16'); %error
   fclose(fid);

end

%note:each .pcm file has different length of data( the 1st pcm is 1x1298,the 2nd 1x890, etc..) namely for each phoneme i want to create a 2-dim matrix for each phoneme with 60 rows and different columns's length..

any help/ideas??

thx in advance

Answer 1

[panagiotis]

error in line 2 i mean "CAN'T" not "CAN"

[Image Analyst]

Do you know that you can edit text that you've posted?

[panagiotis]

no,thx for noted it!

[Jan]

Please accept the answer, which solves the problem.

Answer 2

[Jan]

The command fread(fid,inf,'int16') replies a vector, but you try to assign it to the scalar sig(k,i). Please post a copy of the error message, whenever you mention the error in the forum.

Do all files contain the same number of elements? If not, you can use a cell, e.g. sig = cell(1, 60).

There are further problems in the code, e.g. you use the first phonemes only and the contents of sig(k, i) does not depend on k.

Answer 3

[panagiotis]

yes i use the first phoneme in order to find the error and then i think its easy to generalise it ;)

I know my assignment error but i can still find the solution to this. Firstly i want to read the 60 .pcm files (each of .pcm has different size) from subfolder 'aa'(phoneme{1} in the code)

TrainFile=cd('C:\Users\panagiotis\Documents\MATLAB\patreco_project\training');
phonemes={'aa' 'ah' 'ax' 'eh' 'ih' 'ix' 'ow' 'ux' };
cd(phonemes{1});
data=dir('*.pcm');

for i=1:length(data)
   fid=fopen(data(i).name,'r');
   sig=fread(fid,inf,'int16');
   fclose(fid);

end

can you fix this with cell command?? this for loop obviously is wrong cause only prints the last .pcm file from subfolder 'aa'.if you fix me for 'aa' then i can do it generally!

thx in advance!

[Walter Roberson]

replace sig with sig{i}

[panagiotis]

first of all thx a lot,also if i want to generalise it for all 8 phonemes i'll create a second for loop for k=1:8

and the sig will be sig{k,i}! am i right ?? thx in advance!