They reported their lastest insight into this early morning "wall of sound" in the journal Behavioural Ecology and Sociobiology.

他们在《行为生态学和社会生物学》杂志上把对今天凌晨的“音墙”的最新见解给报道出来。

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By the time he passed four thousand feet he had reached terminal velocity, the wind was a solid beating wall of sound against which he could move no faster.

他穿越四千英尺的高度时，已经达到极速，呼啸着的海风就像一堵坚实的墙，拦在前面，使他无法以更快的速度前进。

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There is a kind of rough wall surface, which is said to be sound-absorbing.

有一种墙面是麻的，据说可以吸音。

《新英汉大辞典》

As he stood over the ball I suddenly heard this wall of sound chanting "Beckham, Beckham, Beckham".

BBC: David Beckham (left) tangles with Owen Hargreaves

But on the contrabass trombone, you get this huge wall of sound .

WSJ: It Takes Brass to Play the Wagner Tuba | By Barbara Jepson | The Ring of the Nibelung

On the other hand I thought about a wall of sound collage.

BBC: Andrew Bird's high-wire act takes flight