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From: chetan on 22 Oct 2009 06:39
hi,
i used the following code as given on net...


function [Y,FS,NBITS,encoding_info,tag_info,out] = mp3read(FILE)
%MP3READ Read MP3 (".mp3") sound file.
% Y = MP3READ(FILE) reads a MP3 file specified by the string FILE,
% returning the sampled data in Y. Amplitude values are in the range [-1,+1].
%
% [Y,FS,NBITS,encoding_info,ID3v1_tag_info] = MP3READ(FILE) returns the sample rate (FS) in Hertz
% and the number of bits per sample (NBITS) used to encode the
% data in the file.
%
% 'encoding_info' is a string containing information about the mp3
% encoding used
%
% 'ID3v1_tag_info' is a string containing the tag information of the file
% (only ID3v1 tag supported in this version)
%
%
% Supports two channel or mono encoded data, with up to 16 bits per sample.
%
% See also MP3WRITE, WAVWRITE, AUREAD, AUWRITE.
a = length(FILE);
if a >= 4
exten = FILE(a-3:a);
if exten ~= '.mp3'
FILE = strcat(FILE,'.mp3');
end
end
if a <= 3
FILE = strcat(FILE,'.mp3');
end
if exist(FILE) ~= 2
error('File not Found')
end
%%%%%% Location of the ".exe" Files
s = which('mp3read.m');
ww = findstr('mp3read.m',s);
location = s(1:ww-2);
%%%%Temporary file%%%%%%
tmpfile = ['temp.wav'];
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%% Data Decoding using "mpg123.exe"%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
[stat,raw_info] = dos([location,'\mpg123', ' -w ', tmpfile, ' ', '"',FILE,'"']);
data_init = findstr(raw_info,'MPEG');
blocks = findstr(raw_info,'[0:');
if raw_info(blocks+3) == '0'
error('Error while decoding file. File may be corrupted')
end
[Y,FS,NBITS] = wavread(tmpfile); % Load the data and delete temporary file
delete(tmpfile);
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
tag_info_start = strfind(raw_info,'Title');
tag_info_end = (strfind(raw_info,'Playing MPEG'))-1;
tag_info = raw_info(tag_info_start:tag_info_end);
encoding_info = raw_info(data_init(3):data_init(3)+53);


-------------------------------------------------------------
i tried this code but error occurs:-

??? Error using ==> wavread
Cannot open file.

Error in ==> mp3read at 48
[Y,FS,NBITS] = wavread(tmpfile); % Load the data and delete temporary file

Error in ==> Untitled3 at 1
[x,f,s]=mp3read('1sindihits11.mp3');

-----------------------------------------------------
i put all files to read in the same directory all 3 files:- mpg123.exe,mp3info.exe,mp3read.m and also i have created a new file untitled.m with code:-[x,fs,b]=mp3read('life.mp3');
sound(x);
--------------------------
and included life.mp3 in that directory and run error occured....
and i put this directory in the current path too... still this error on running untitled.m
........................

pls help me ...
monga_chetan2006(a)yahoo.com my email.
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