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I'm not so sure, a reasonable low pass filter is probably not going to very aggressively attenuate 25kHz, so you can be pretty confident that pumping at a very
by Traster 7y ago
I'm not so sure, a reasonable low pass filter is probably not going to very aggressively attenuate 25kHz, so you can be pretty confident that pumping at a very loud 25kHz tone will screw up the mic. Remember, once the microphone is clipping the job is done - you're not going to recover the signal, so it'd be very hard to recover using digital filtering after the ADC.
- mrob 7y ago>once the microphone is clipping the job is done Try adding a loud ultrasonic sine wave to speech in your favorite audio editor, and then hard clip it. Most of the distortion can be filtered out without too much damage to the speech by looking at the spectrogram and notch filtering unwanted frequencies. I imagine modern AI could do the same thing automatically. But high-pass filtered white noise + clipping will make the speech unrecoverable if it's loud enough.
- dijksterhuis 7y agoThen it’s possible to use Adversarial Examples to get around any AI implementation. Turns into more cat and mouse at the end of the day.