General Synonyms:
* Clamor: A loud, confused noise, especially of people shouting.
* Din: A loud, unpleasant, and continuous noise.
* Roar: A deep, loud, and prolonged sound.
* Blare: A loud, harsh sound.
* Racket: A loud, confused noise.
Synonyms emphasizing metallic sounds:
* Clatter: A continuous, rattling noise.
* Clash: A loud, sudden, metallic sound.
* Ring: A clear, resonant sound.
Synonyms emphasizing intensity:
* Cacophony: A harsh, discordant mixture of sounds.
* Bedlam: A state of wild uproar and confusion.
* Uproar: A great commotion, noise, or disturbance.
The best synonym will depend on the context of your writing. For example, if you are describing the noise of a blacksmith's hammer striking metal, "clang" or "clash" might be the most fitting. If you are describing the noise of a crowd, "clamor" or "din" might be better choices.