Noise Reduction System
https://www.evernote.com/shard/s449/sh/1f3e42b7-45d8-4ced-9350-bc0b14b055ee/7522dff37c03ebbc95b83f86ae9d64f7
You have a rock band, and also no area to practice. Well, you can practice in your basement, garage, or bed room but you stay in an apartment, or a removed house with next-door neighbors crowding you on both sides.