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I'm currently working on a project in C# and I want to know if it is possible to import a song and measure the dB levels of the file.

For example: If a song is 3 minutes long I would want to divide the song into 5 second sections and measure the dB of each part.

There is a relative calculation I can use which is

dB = 20 * log10(amplitude)

However, this answer here states that this formula is not accurate. I'm not a music expert so before I go any further in this project I want to know if their is any known way for me to accurately measure audio files through a program or can it only be measured in person? (think studio-quality songs). If so, can you explain?

If there is a better formula to use in this context lmk :)

Please kindly comment if you don't understand my question. I understand that what may make sense to me may not make sense to everyone else.

sorrynotsorry
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  • I don't think that answer says it is not accurate. It says that is it limited to providing you with an accurate measurement of the relative perceived loudness at the microphone, and subject to the microphone's response/sensitivity. If you need an absolute sound pressure measurement you'll need calibration data. – SleuthEye Aug 16 '17 at 23:56
  • a sibling site focuses on digital signal processing ... here are some tips https://dsp.stackexchange.com/search?q=calculate+db+level – Scott Stensland Aug 17 '17 at 00:07

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