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  • I think you could just use Waveform - that can handle 8kHz which should be enough. But then you need FFT/etc. There's a lot of processing done which turns the sound data into something much lower bitrate.

    To be honest it could do with a bit of extra support for it in the Espruino firmware.

    Any nice idea, how it could go on ?

    It should if you remove some of the extra functionality (like networking!) :) However I found that actually the 'hello world' example I based Espruino on contains everything. You can delete 3/4 of the ops available and it'll be fine - I'll be merging tensorflow2.2 soon and I'll do that then, so it should fit much more easily


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