add_noise_to_NIST_files.m

add_noise_to_NIST_files.m

SNR=40; % the SNR of white noise to apply to each file
path = '/home/james/databases/speech_db/timit_xxl_white/db/timit_full';
[status,result]=system(['find ',path,' -name "*.wav" | grep -v snr > ',path,'/timit_list.txt']);

listfilename = [path,'/timit_list.txt'];

filelist = fopen(listfilename);
wavname = fgetl(filelist);
count = 1;
while ischar(wavname),
    [sig fs header] = read_NIST_file(wavname);
    noisy = addnoise(sig',SNR); %'
    [a b c] = fileparts(wavname);
    write_NIST_file([a,'/',b,'.snr',num2str(SNR),c],noisy,header);    
    if mod(count,50) == 0
        fprintf('.');
    end
    count = count + 1;
    wavname = fgetl(filelist);
end
fprintf('\ncomplete. %d files processed.\n',count-1);
fclose(filelist);