recObj = audiorecorder %Create an audiorecorder object named recObj
%for recording audio input.
%Sample frequency (Hz) - default 8000
Prompt user to start/stop recoding & record audio for n seconds!
disp('RECORD') recordblocking(recObj, 3); %Record your voice for 3 seconds
disp('STOP!');
Manipulate the recorded sound
%play(recObj); %Play back the recording...I commented it in my code!
y = getaudiodata(recObj); %Store data in an array, y.
Do Fourier Transform
Fs = 8000; % Sample frequency (Hz)
Nsamps = length(y);
t = (1/Fs)*(1:Nsamps) %Prepare time data for plot
y_fft = abs(fft(y)); %Retain Magnitude
y_fft = y_fft(1:Nsamps/2); %Discard Half of Points
f = Fs*(0:Nsamps/2-1)/Nsamps; %Prepare freq data for plot
Plot Sound File in Time Domain
plot(t, y)
xlabel('Time (s)')
ylabel('Amplitude')
title('...... in Time Domain')
Plot Sound File in Frequency Domain
plot(f, y_fft)
xlim([0 1000])
xlabel('Frequency (Hz)')
ylabel('Amplitude')
title('Frequency Response of ....')
