Possible Clues:

• Like Niagara Falls, sound-wise
• Noisy, like a jungle
• Let out __ (bellow)
• Like a crowd when the headliner takes the stage
• Like excited fans in stadiums
• Like a clamorous crowd
• Thunderous, as a crowd
• '... your flashes of merriment, that were wont to set the table on ___?' (Hamlet)
• Like a home crowd on a walk-off hit
• Erupting with noise