Write a program with the aim of performing an audiometry test at MATLAB. The pro

Question

Write a program with the aim of performing an audiometry test at MATLAB. The program should be as interactive as possible. For example, at first, which ear is to be tested should be chosen so that the sound is only given to that channel of the ear. In addition, whether the test frequency increases automatically or manually should be asked as a parameter. The frequencies of the person being tested should be entered by the user as well as whether they are hearing or not. The sound intensity setting for each test frequency must be present in dB, and the audiometric chart should be displayed at the end of the test. The program should be prepared with MATLAB GUI.

In GUI your group name must be appear, also the frequency should be select as: [750 1000 1250 1500 1750 2000]

can you help me i want to solve this question by matlab program

Explanation / Answer

% Program for audiometry test

% You may test each ear individually and compare them.

% 1. Lower the volume on your computer until the tone prduced by the first

% push button is no longer audible. Headphones are recommended.

% 2. Click "begin test", and click the third push button whenever you hear a tone.

% 3. You can save the plot and data for comparison with others later on.

% Begin initialization code - DO NOT EDIT

gui_Singleton = 1;

gui_State = struct('gui_Name', mfilename, ...

   'gui_Singleton', gui_Singleton, ...

   'gui_OpeningFcn', @eartest_OpeningFcn, ...

   'gui_OutputFcn', @eartest_OutputFcn, ...

   'gui_LayoutFcn', [] , ...

   'gui_Callback', []);

clear

%clc

warning off

global heard

freqs = [750,1000,1250,1500,1750,2000];

amps = 10./(10.^((3/20)*(0:6)));

handles.response = zeros(1,6);

for f = 1:length(freqs)

for a = 1:length(amps)

if(f>1 && a < handles.response(f-1)-6)

handles.response(f)=handles.response(f-1);

continue;

end

heard = 0;

plot(freqs,handles.response)

pause(0.2+rand*0.7) %% wait for duration of tone

for wait = 1:20

pause(2/20) %% wait 2 seconds in total

if(heard == 1)

handles.response(f)=a;

break;

end

end

if(heard == 0) break; end

end

end

response_2000 = handles.response(find(freqs == 2000));

response_db = 3*(response_2000-handles.response)-4; %% threshold of hearing plot

%%semilogx(freqs,response_db) %%without polinomial fit

[P,S] = polyfit(freqs,response_db,7);

handles.smooth_response_x = 10:10:16000;

handles.smooth_response_y = polyval(P,handles.smooth_response_x);

semilogx(handles.smooth_response_x,handles.smooth_response_y)

xlabel('Frequency (Hz)')

ylabel('Threshold of Heading (dB)')

grid on

fs=4000; %sample freq in Hz

t = [0:1/fs:.5];

amp = 10./(10.^((3/20)*(0:2000)));

wave=amp.*sin(2*pi*fs*t);

envilope = sin(pi*t/t(length(t)));

wave = wave .* envilope;

%play sound

sound(wave,fs);

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