audio read error in speech recognition using lpc

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hassan jamil
hassan jamil 2019-10-14
回答： Ceren Mine Esen 2020-12-26
%Add path of the Training Data
addpath('\matlab cde');
%Record your sound command
w=1;
while(1)
recObj = audiorecorder; % Initialised speech recorder object
in=input('Press a to command and x to exit...','s');
if in == 'a'
disp('Start')
recordblocking(recObj, 1.2); % Recording speech
disp('Stop');
y = getaudiodata(recObj); % Converting recorded speech to array
d=fdesign.highpass('Fst,Fp,Ast,Ap',8700/16000,10000/16000,40,1); % Highpass filter
hp=design(d); % Highpass filter object
x=filter(hp,y); % Filter applied to data
%Set Variables
NoOfSamples = 100;
Letters = {'oil'}; % Samples that are in the Voice templates directory
% LPC parameters
NoOfLPCFilters = 20; % Setting number of LPC filters
lpccoeff = zeros(size(Letters,2)*NoOfSamples,NoOfLPCFilters+1);
% LPC Training for all letters
for ii = 1:size(Letters,2);
ll = 1;
for kk = 1:NoOfSamples
file_name = strcat(Letters(ii),int2str(kk),'.wav');
Samples = audioread(char(file_name));
zz = find(Samples) < max(Samples/3);%Threshold speech regions
Samples(zz) = 0;
zz = find(Samples);
Speech_Region = Samples(zz)/norm(Samples(zz));
lpccoeff(ii,ll,:) =lpc(Speech_Region,NoOfLPCFilters);
ll = ll + 1;
end
end
% Prepare Gaussian distribution for LPC coeffs of all samples
tempStorage = zeros(1*NoOfSamples,NoOfLPCFilters);
tempStorage(:,:) = lpccoeff(1,:,2:end);
obj_A2 = gmdistribution.fit(tempStorage,1);
tempStorage(:,:) = lpccoeff(2,:,2:end);
obj_B2 = gmdistribution.fit(tempStorage,1);
tempStorage(:,:) = lpccoeff(3,:,2:end);
obj_C2 = gmdistribution.fit(tempStorage,1);
tempStorage(:,:) = lpccoeff(4,:,2:end);
obj_D2 = gmdistribution.fit(tempStorage,1);
tempStorage(:,:) = lpccoeff(5,:,2:end);
obj_E2 = gmdistribution.fit(tempStorage,1);
% Extract LPC for test data
Samples = x;
zz = find(Samples) < max(Samples/3);%Threshold speech regions
Samples(zz) = 0;
zz = find(Samples);
Speech_Region = Samples(zz);
lpc_test = lpc(Speech_Region,NoOfLPCFilters);
% Classify LPC test data based on Mahanalobis distance
D2(1) = mahal(obj_A2,lpc_test(2:end));
D2(2) = mahal(obj_B2,lpc_test(2:end));
D2(3) = mahal(obj_C2,lpc_test(2:end));
D2(4) = mahal(obj_D2,lpc_test(2:end));
D2(5) = mahal(obj_E2,lpc_test(2:end));
plot(x);
%Checking for min i.e the best match and result
m2 = min(D2);
if m2==D2(1)
disp('Forward');
%fprintf(s,'Forward');
elseif m2==D2(2)
disp('Backward');
%fprintf(s,'Backward');
elseif m2==D2(3)
disp('Left');
%fprintf(s,'Left');
elseif m2==D2(4)
disp('Right');
%fprintf(s,'Right');
elseif m2==D2(5);
disp('oil');
end
end
if in == 'x'
%fclose(s);
% error('Program Terminated !!!');
break;
end
w=w+1;
end
and the error is
Error using audioread (line 74)
The filename specified was not found in the MATLAB path.
Error in 2mm (line 47)
Samples = audioread(char(file_name));

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回答（1 个）

Ceren Mine Esen
Ceren Mine Esen 2020-12-26
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