Method to plot two audio files in the same graph of (amplitude Vs. Frequency)

Question

Harindu Kodithuwakku 2018-5-10

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/400191-method-to-plot-two-audio-files-in-the-same-graph-of-amplitude-vs-frequency

编辑： Aditya Salveru 2018-5-15

data.zip

I want to plot two audio files in one graph to compare the difference in the frequencies. One of the the audio files has background noise, whilst the other audio file has got background+useful sound. I want to determine the frequencies which are not present in the background.

The code that I have plots only for audio file. I want to overlap both audio files into one graph.

I have attached the two audio files and the code.

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Harindu Kodithuwakku 2018-5-12

Hi, Thank you very much for the answer. but,should I change the length of the both 'wave'files if the two audio files have different recording times? does it change NFFT,Y and f as well?

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