How can i process a csv file to generate a waveform and then do noise removal

I made a circuit for audio amplifcation. Gave an input audio signal and observed waveform on oscilloscope. I saved the waveform in .csv format. I have to process the .csv in software to remove noise from signal. Where do i start? Is it possible to convert csv to wav in matlab?

[Image Analyst]

Unfortunately you forgot ot attach your csv file to your question. So about all I can say to your question is "Yes, you can read in a CSV file and do some noise removal on it, and play it as a sound, and use audiowrite() to save it as a .wav format file."

Answer 1

[Kilian Liss]

First open your cvs file with notepad, and figure out what line your data begins in. So for example, in the following image the data begins at line 32

Now you may import your data using the following code. This works for any data file that you can read with notepad. Here fileLoc is the directory that your CSV file is in, ',' indicates that the data points are seperated by commas, and 32 is the line that the data begins in. The data will then be stored in a matrix named 'data'.

fileLoc = 'C:\The\loaction\that\your\file\is\in.csv';
file = importdata(fileLoc, ',', 32);
data = file.data;

For signal smoothing, please refer to the following article:

https://au.mathworks.com/help/signal/examples/signal-smoothing.html

[Maidah Zahid]

I saved athe file as a matrix. it is a 6000*2double. Can it generate a graph?

[Maidah Zahid]

Thanks. I managed to plot a graph. But even after looking at the link you sent me I'm confused about how to process the filter. I will look through it more.