MATLAB: How to convert .csv file into audio file

signal processing

I have attached the sample file. Kindly help me to resolve the problem

Best Answer

Using numbered variables is never a good idea.

Do this instead:

T=readtable('2khz.csv');
A = table2array(T(:,3:8));

Then, in the save call, add ‘Fs’:

Fs=6000;
save('mymat.mat','Fs','A')

You can then use audiowrite with the matrix:

audiowrite('mymat.wav',A,Fs);

You can import all your data with audioread, however sound will only work with at most two channels:

 [y,Fs]=audioread('mymat.wav');
 sound(y(:,3:4),Fs);

for example.

Related Solutions

MATLAB: Audio file (.wav) being overwritten

You have

speech = ('coch4.wav');
speech2 = speech;

So your speech2 filename is the same as your speech filename.

[y,Fs]=audioread(speech2); %don't use wavread or audioread

So you read from coch4.wav via speech2 filename

audiowrite(speech, speech_trimmed, 44100);

and then you write to the file name given by speech, which is the same as the filename given by speech2, so you are writing to the same file that you read the data from.

MATLAB: Convert .csv to .wav audio

Debagnik - the y variable represents the audio samples. In your case, that would be output. Just change your code to the following

time = data(: ,1);
y = data(: ,2);
plot(time, y);

I see that you have set the sampling rate, Fs, to be 6000...just like in the link that you have provided. If your time data is in seconds, then it looks like you have 2.5 seconds (time(end) - time(1)) worth of data. Since there are 108569 (length(output)) samples, then this would mean your Fs could be

Fs = length(output) / (time(end) - time(1)); % 43427.6

Is this correct? Or is your sampling freqency really 6000?

Best Answer

Related Solutions

MATLAB: Audio file (.wav) being overwritten

MATLAB: Convert .csv to .wav audio

Related Question