ChatterBlocker 1.1.3

Reduces distraction from nearby conversations so you can focus on your work, not your co-workers.
ChatterBlocker blurs recognizable speech using a soothing blend of nature sounds, music and background chatter. Intelligible speech is often the most distracting sound in the workplace. ChatterBlocker lowers the intelligibility and reduces the distraction.
ChatterBlocker also offers mindfulness meditation tracks intended to increase concentration, reduce distractibility and minimize the stress response to office noise.