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The volume and loudness level of the surrounding environment in a public setting such as a restaurant. Usually result in irritation after a prolonged attempt to engage in any conversation over a very loud environment.
At the Dim Sum restaurant, it is so crowded and loud in there one cannot hear what their own table is trying to say when engaged in a conversation.

"What did you say? I can't hear you, it's like DIM SUM Volume up in this place"

"it's too quiet here, feels like everyone is eavesdropping into our conversation, let's go somewhere with Dim Sum volume"
by -Car April 21, 2009