noise-cancelling

Sonos Ace wireless headphones are on sale for $279 (originally $399) at Amazon, Best Buy, Walmart, and Sonos. They feature active noise cancellation, 30-hour battery, and compatibility with Sonos soundbars.

Anker's Soundcore Sleep A20 noise-blocking earbuds are available at a new low price of $99.99, $80 off, at Best Buy and Target.

Bose's QuietComfort Ultra headphones have dropped to a new low price of $379, $70 off retail.

Monocle 3.5 for macOS is an update to the screen noise-cancelling app.