ah-mar-tee-uh sen
Here's a breakdown:
* ah: The "a" in "father"
* mar: Similar to the "mar" in "march"
* tee: Like the "tee" in "tea"
* uh: The "uh" in "but"
* sen: Like the "sen" in "send"
It's important to note that the "a" in "Amartya" is pronounced with a short "a" sound, not a long "a" sound like in "ate."