There are really good mics at background rejection, if you’re worried about external voices filtering in. 1. Cheapest is probably a USB dynamic mic of some kin

There are really good mics at background rejection, if you’re worried about external voices filtering in. 1. Cheapest is probably a USB dynamic mic of some kind. 2. Next is a Stenomask at around $250 3. A lot of folks swear by the DPA d:fine cardioid, which is $800-1300 including an interface. There’s also cardioid shirt worn lavalier I’m interested in trying sometime, which is the same interface but the mic is $150 cheaper ($650 -> $500) If you’re worried about other people hearing you, your options include an isolated area, playing noise (white noise or music?), or using a StenoMask, which blocks sound in both directions. Remember in the US your employer is required under the ADA to provide “reasonable accommodations” for disability, which may include a private working space, pair programming, or letting you work from home more often.