

The easiest way to reduce unwanted noise is to record in a room as far away from windows, and to turn off all fans and air conditioners. Record in a room in the middle of your house

At the very least, just tent a blanket over your head when recording vocals.

It’s best to record in a carpeted room with soft furniture and as few flat surfaces as possible hard, flat surfaces are what produce unwanted echoes. If you’re not willing to spend any money on acoustic treatment, that’s fine. Fortunately, you don’t need to buy expensive equipment to mitigate these unwanted effects.
