Since this word consists of a kanji with hiragana attached, you can bet that it will use the kun'yomi reading. You didn't learn that reading with this kanji, so here's a mnemonic to help you:
What's noisy? That uni's rude sighing (うるさい). It just keeps sighing loudly over and over. It's sooo annoying!
The sound of him eating potato chips is loud and annoying.