How to use matlab audioread Plot the spectrum with frequency on the x-axis and dBA /dBC on the y-axis？

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ZHU z 2022-3-24

评论： ZHU z 2022-4-5

Hi,everyone~

How to use matlab audioread to plot the spectrum with frequency on the x-axis and dBA/dBC sound pressure level (SPL) on the y-axis?

As shown in Figure 1.

The data that is currently available is a audio(wav).

I would be grateful if you have example code!

thanks

Attach a sample audio.(See the attachment)

fig.1

ZHU z 2022-3-24

Could anyone help me? ddl will be here soon.

Chunru 2022-3-24

doc audioread     % for reading audio file
doc pwelch        % for computing power spectral density

ZHU z 2022-3-24

OMG~Thank you for your full answer, this is what I want~

Thank you!

ZHU z 2022-4-5

hi Chunru~

Sorry to bother you again, the result after I run the code is shown in the figure 1.

The vertical axis is in dBm, is this the correct result? How do I convert to dBA? Thanks a lot~

fig 1

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R2017a

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