Can some one tell me whats wrong with this code. Its very urgent. Thank you.

Speech Recognition from file

    if chos==3, 
        clc; 
        [namefile,pathname]=uigetfile('*.wav;*.au','Select a new sound'); 
        if namefile~=0 
            pos = strfind(namefile,'.'); 
            ext = namefile(pos+1:end); 
            if strcmp(ext,'au') 
                [y,Fs,bits] = auread(strcat(pathname,namefile)); 
            end 
            if strcmp(ext,'wav') 
                [y,Fs,bits] = wavread(strcat(pathname,namefile)); 
            end 
            % if the input sound is not mono 
            if size(y,2)==2 
                y=y(:,1); 
            end 
            disp('Sound selected for recognition:'); 
            message=strcat('File:',namefile); 
            disp(message); 
            message=strcat('Location:',pathname); 
            disp(message); 
        else 
            warndlg('Input sound must be selected.',' Warning ') 
        end 
        if (exist('sound_database.dat')==2) 
            load('sound_database.dat','-mat'); 
            if (Fs ~= samplingfrequency) || (bits ~= samplingbits) 
                warndlg('Sampling parameters do not match with parameters already present in database',' Warning ') 
            else 
                %----- code for speech recognition ------- 
                vettore_pesi = zeros(sound_number,1); 
                D1 = specgram(y,512,Fs,512,384); 
                disp('Database scanning...'); 
                for ii=1:sound_number 
                    D2               = specgram(data{ii,1},512,Fs,512,384); 
                    SM               = syms(abs(D1),abs(D2)); 
                    %[p,q,C]          = dp(1-SM); 
                    [p,q,C]          = dpfast(1-SM); 
                    peso             = C(size(C,1),size(C,2)); 
                    vettore_pesi(ii) = peso; 
                    message=strcat('Sound #',num2str(ii)); 
                    disp(message); 
                end 
                [min_value,min_index] = min(vettore_pesi); 
                speech_id             = data{min_index,2}; 
                %----------------------------------------- 
                disp('Matching sound:'); 
                message=strcat('File:',data{min_index,4}); 
                disp(message); 
                message=strcat('Location:',data{min_index,3}); 
                disp(message); 
                message = strcat('Recognized speech ID: ',num2str(speech_id)); 
                disp(message); 
                msgbox(message,'Matching result','help'); 
            end 
        else 
            warndlg('Database is empty. No matching is possible.',' Warning ') 
        end 
    end

[Image Analyst]

Well just off the top of my head I'd say it's "wrong" because it doesn't work - it doesn't do what you want. That's about all we can say considering what you've given us to work with. Please read this before you respond again: http://www.mathworks.com/matlabcentral/answers/6200-tutorial-how-to-ask-a-question-on-answers-and-get-a-fast-answer

[Walter Roberson]

http://www.mathworks.com/matlabcentral/answers/29922-why-your-question-is-not-urgent-or-an-emergency

Answer 1

[Varun]

The code is for speech recognition from file. The error is at the line SM=simmx(abs(D1),abs(D2));

If it is invalid function then what is the valid function to be used.

Answer 2

[Walter Roberson]

Your code does not contain that line. Your code contains a call to syms() not a call to simmx().

syms() does not return any values, and must be passed names, not values.

Your code should probably use

SM               = sym([abs(D1),abs(D2)]);

Note that this requires the Symbolic Toolkit.

dpfast() does not appear to be a Mathworks supplied routine, so I have no idea why it wants a symbolic array.