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That should be part of an assessment that government does before allowing those vehicles onto our streets.

A small nit (sorry): it’s probably not a matter of sensor quality (decent quality microphones are not very expensive), but rather the neural networks that process the audio signal.

It’s a blend of both. The human ear has a vastly more complex structure than a membrane and a sensor.

We have complex flexible shapes to channel audio. Alongside an extremely complex set of hairs for hearing.

I don't think you need freakishly good filtering to find something as pure as a siren.

It’s almost a harder problem - I can regularly hear sirens in my town the moment they leave the fire station until they arrive at their destination - more than a mile away in each case.