I used to work at Sonos, long before their current app update debacle and headphone debut. During the first aborted product effort to develop headphones, we were looking at a conceptual feature similar to this - selectively allowing people’s voices through the ANC chipset. I don’t recall the exact approach the DSP folks were using (I was closer to the hardware for ANC) but they were really only able to figure out how…
About once a year I waste about a day shopping for earbuds that would allow me to work in a noisy environment without projecting that noise into my phone calls/conference calls. Never found an adequate product. Seems like noise cancelling has been solved for the listener (isolation + ANC) but I would sure love a hardware/software combo to come along and allow me to work truly remotely by blocking out noise/isolating…
Unfortunately, they don’t do active noise canceling for output sound, but their mic is incredible at canceling out noise. I’m not sure how they do it but have heard there is a contact mic in the bridge. Just got mine, have gotten positive feedback from others when making calls in busy environments.