In design, they’re simple. They’re very traditional earbuds, with a small circular bulb that holds a few microphones and a processor. All the processing of sound is done individually on each bud, and they can be calibrated to each user's individual separate ears. Their software leverages tried-and-true acoustic techniques for noise cancellation and effects, but also machine learning algorithms able to adapt to your surroundings.
The app associated with the Here buds has three tabs: a volume knob, which is the master switch for the volume of your world; an equalizer, coupled with effects like echo and reverberation; and a tab split into Tune In and Tune Out, which are pre-made filters meant to either enhance the soundscape or cut it out tailored to certain situations.