how to change this code to plot the frequency response of the desired interval?
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Michael Sugiarto
on 23 Mar 2022
Commented: Star Strider
on 23 Mar 2022
Hi! I am using the R2021b Matlab and I need this code to plot the frequency response of the audio in the specified time interval. Could anyone help me please?
The code is displayed below:
recObj = audiorecorder;
Fs=8000;
filename = sprintf('myAudioData.wav');
disp('Start speaking.')
recordblocking(recObj, 10);
disp('End of Recording.');
doubleArray = getaudiodata(recObj);
audiowrite(filename,doubleArray,Fs);
[x,Fs] = audioread('myAudioData.wav');
ts = 1 / Fs;
n = round(0.02 / ts);
nexttile
t1 = 1.000;
t2 = 1.020;
% start and end index in audio data of segment of interest
idx1 = round(t1/ts);
idx2 = round(t2/ts);
% plot it!
plot(x(idx1:idx2)); % plot 1st 20 ms of audio file
nexttile
t3 = 3.000;
t4 = 3.020;
% start and end index in audio data of segment of interest
idx3 = round(t3/ts);
idx4 = round(t4/ts);
% plot it!
plot(x(idx3:idx4));
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