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TOPIC:

UMA-8 waveform showing shot noise 1 year 2 weeks ago #60673

oukchoi
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Hello,

I recently bought UMA-8 with its enclosure to develop my own beamforming algorithm.
I updated the firmware so that raw wave data could be saved.
The filename of the firmware was "micArray_vf_raw_v1.3_up.bin"
I set the sampling rate to 48kHz and the bit depth to 24bits.
Among the 8 channels, I extracted 6 channels (from mic 1 to mic 6).

I plotted the waveforms and the attached files show 10 secs of waveforms.
As you can see in the attached files, each channel independently exhibits some kind of shot noise (i.e., random peaks at each channel).
Is there any solution to remove those random shot noise?
I don't think my code has a problem because the waveforms of different channels are similar except for the shot noise.