As a content creator you need to record your voice often, you may not have the equipment to record professional sound such as an isolated sound studio or a professional Mice and filter for sound!
You can record your voice and isolate it from the sound of noise around you to get the purest sound through the microphone of your Android phone only using a wonderful application called a small RecFroge II free and you can download it from Google Play free of charge
download application from here