Question

what measures can be taken to reduce echo

Answer 1

Use sound absorbing material such that the sound doesn't reflect back..

Answer 2

hello dear friend ⭐⭐⭐⭐⭐

1. Hang Textiles and Wall Art on Parallel Walls. 
2. Use a Tall Bookcase and Add Objects to the Room
3. Add an Area Rug on to Bare Floors.
4. Use Acoustic Panels to Enhance Sound Absorption

I hope it will help you ✨✨✨✨✨