Computing Real-time Noise Level in dB

[roboaviator]

Is it possible to estimate the current background noise level in real time?
If so, how could I implement this?

I would like to use this information to determine if my robot is indoors (low noise level) or outdoors (high noise level).

Thank you!
JD

[roboaviator]

To give some more information, I am using an 8-channel microphone array and AudioStreamFromMic > MultiFFT to get the frequency spectra.

[nterakado]

Thank you for your inquiry.

Please use a BGNEstimator node.
https://www.hark.jp/document/hark-document-en/subsec-BGNEstimator.html

Best regards,
HARK support team

• This reply was modified 3 years, 1 month ago by nterakado.

[roboaviator]

Since BGNEstimator returns the noise spectrum (Matrix<float>), is there a node that will compute the overall power contained in the spectrum (a single float dB value for the overall noise level)?

Thank you,
JD

[nterakado]

We are sorry that there is no such a node.
You will have to calculate the dB from the output spectrum of BGNEstimator using HARK-Python3 or similar.

Best regards,
HARK support team

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