function code = train(traindir, n)% Speaker Recognition: Training Stage%% Input:%       traindir : string name of directory contains all train sound files%       n        : number of train files in traindir%% Output:%       code     : trained VQ codebooks, code{i} for i-th speaker%% Note:%       Sound files in traindir is supposed to be: %                       s1.wav, s2.wav, ..., sn.wav% Example:%       >> code = train('C:\data\train\', 8);k = 16;                         % number of centroids requiredfor i = 1:8                     % train a VQ codebook for each speaker    file = sprintf('%ss%d.wav', traindir, i);               disp(file);       [s, fs] = wavread(file);        v = mfcc(s, fs);            % Compute MFCC's       code{i} = vqlbg(v, k);      % Train VQ codebookend