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northcliff_spl_monitor's Issues

CPU usage is excessive on a pi0

@roscoe81
Thanks for sharing this project. Wonderful initiative . I truly think sound is the sleeper sensor and is very useful especially when it comes to public safety applications.

Have you looked at optimizing the CPU usage . The script seems to be working and I see lively spikes in SPL when I clap or yell but I am seeing 80% CPU usage on my dinky little pi0 which has to do other tasks besides SPL measurment

I am using the latest 2.9 version. Was 2.1 version more gentle on the CPU usage. What if I am not interested in the frequency histogram, would that save a lot of CPU?

I think saving some recordings loud clips (when a dB level is exceeded) off for future analysis implemented as a circular buffer sounds very useful. Any thoughts on that ?

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