他发现,声音回声衰减的时间长短取决于周围物质对声音原始能量的吸收。
He found that the length of time it takes a sound's echo to decay is determined by the absorption of the sound's original energy by surrounding material.
音频回声滤波器在一个给定延迟重复一个声音,衰减基于衰变率的重复。
The Audio Echo Filter repeats a sound after a given Delay, attenuating the repetitions based on the Decay Ratio.
这些特征应该被记录:大小、形状、回声反射性、边界、方位和衰减(例如:减弱或增强)。
These features should be noted: size, shape, echogenicity, margin features, orientation, and attenuation (eg, shadowing or enhancement).
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