One of the ways an experience of time is produced in poetic contexts requires engaging our body's memories, such as how we hear a sound. The way sound decays in a space, or how it moves and dimishes across a duration of time, engages our ability to take note of the unfurling present moment. It's a particular attention, fixated on a deeply embodied phenomenon that reinvigorates our ability to locate ourselves in the world. To invoke a sound is to invoke the body in present time.
I find this link between sound, the present, and the body richly explored by Tan Lin's digital poem, “Echo,” archived at UbuWeb. An echo reflects sound waves back to the listener, often in a diminished manner.