wav_to_audio auxiliary function not working

At my wit's end. This program used to work for me, but now for some reason I keep getting that I cannot open the file. (Was using the same file before and no problem). I tried to just switch to wavread only and it worked but it added all sorts of complications for me to debug throughout the rest of my program, so I'd really like to get wav_to_audio working again. ANY and all help is massively appreciated! If you need more info, just say so!

Error using wavread (line 70)
Invalid Wave File. Reason: Cannot open file.

Error in wav_to_audio (line 108)
    [f_audio,fs,nbits] = wavread(strcat(dirAbs,dirRel,wavfilename));

Error in test_TempogramToolbox (line 61)
[audio,sideinfo] = wav_to_audio('',dirWav,filename);

clear
close all

dirWav = 'data_wav/';

filename = 'Debussy_SonataViolinPianoGMinor-02_111_20080519-SMD-ss135-189.wav';
% filename = '110-130bpm_click.wav';
% filename = 'Faure_Op015-01_126_20100612-SMD-0-12.wav';
% filename = 'Poulenc_Valse_114_20100518-SMD-0-15.wav';
% filename = 'Schumann_Op015-03_113_20080115-SMD-0-13.wav';

%%load wav file, automatically converted to Fs = 22050 and mono
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

[audio,sideinfo] = wav_to_audio('',dirWav,filename);
Fs = sideinfo.wav.fs;

%wav_to_audio function-- 
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
if parameter.message == 1
    fprintf('wav_to_audio: processing %s, ',wavfilename);
end

[pathstr,name,ext] = fileparts(wavfilename);
if strcmp(ext,'.wav')
    [f_audio,fs,nbits] = wavread(strcat(dirAbs,dirRel,wavfilename));
else
    error(['Unknown file format ' ext]);
end

bConverted_to_mono = 0;
if parameter.convertToMono
    if size(f_audio,2)>1
        bConverted_to_mono = 1;
        if parameter.message == 1
            fprintf('converting to mono, ');
        end
        switch parameter.monoConvertMode
            case 'leftmost_channel'
                f_audio= f_audio(:,1);
            case 'rightmost_channel'
                f_audio= f_audio(:,size(f_audio,2));
            case 'downmix'
                % pay attention to energy loss due to differences in phase
                % when using this method. This is often the case for bad
                % stereo mixes
                nChannels = size(f_audio,2);

                  f_audio = sum(f_audio,2);
                  f_audio = f_audio / nChannels;
              otherwise
                  disp('wav_to_audio: monoConvertMode : Unknown method')
          end
      end
  end

bResampled = 0;
if parameter.useResampling
    if (fs ~= parameter.destSamplerate)
        bResampled = 1;
        if parameter.message == 1
            fprintf('Resampling to %d, ', parameter.destSamplerate);
        end
        f_audio = resample (f_audio,parameter.destSamplerate,fs,100);
        fs = parameter.destSamplerate;
    end
end

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Update sideinfo
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
sideinfo.wav.version    = 1;
sideinfo.wav.filename   = wavfilename;
sideinfo.wav.dirRel    = dirRel;
sideinfo.wav.size       = size(f_audio,1);
sideinfo.wav.duration   = (sideinfo.wav.size-1)/fs;
sideinfo.wav.energy     = sum(f_audio.^2);
sideinfo.wav.fs         = fs;
sideinfo.wav.nbits      = nbits;
sideinfo.wav.channels   = size(f_audio,2);
sideinfo.wav.resampled  = bResampled;
sideinfo.wav.monoConverted = bConverted_to_mono;
if bConverted_to_mono
    sideinfo.wav.monoConvertMode = parameter.monoConvertMode;
else
    sideinfo.wav.monoConvertMode = 'none';
end

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Saving data
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
if parameter.save == 1
    if parameter.message == 1
        fprintf('Saving to file, ');
    end
    filename = strcat(parameter.saveFilename,'_audio');
    save(strcat(parameter.saveDir,filename),'f_audio','sideinfo');
end

if parameter.message == 1
    fprintf('Done\n');
end

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Visualization
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
if parameter.vis
    figure;
    for k=1:sideinfo.wav.channels
        if sideinfo.wav.channels > 1
            subplot(sideinfo.wav.channels,1,k);
        end
        plot( [0:sideinfo.wav.size-1] / sideinfo.wav.fs , f_audio(:,k));
        axis tight;
    end
end

end

Answer 1

[Dinesh Iyer]

If you are on R2012b and higher, I would recommend using audioread because it is an improvement to wavread and it supports a lot of other file formats. Also, wavread has been deprecated in the newer releases.

Looks like wav_to_audio is using wavread internally. I am surprised that wavread works and wav_to_audio does not.

Dinesh

[Sarah Elizabeth Lahoud]

Thanks for your help, Dinesh. I've tried that, but it's messing with the number of output arguments. Any advice??

[Dinesh Iyer]

audioread produces a max of two output arguments: y - the data and Fs - the sample rate. Make sure u are not requesting more than two outputs.

Hope this helps.

[Sarah Elizabeth Lahoud]

Yea, I figured that one out. What ended up making it work was cutting out the dirAbs and dirRel, though I'm not sure why that's helped. Have you any idea?

Thanks so much again!

[Dinesh Iyer]

Am not sure what this code does but the variable names dirAbs and dirRel appear to be related to the path to the files. audioread can read any file on the MATLAB path. If the file is not on the path, then a full path to the file has to be provided. Additionally, audioread requires that u specify the extension as well unlike wavread which assumed that any file given was a WAV file and so tacked on the extension automatically.