As you walk, begin to sense the different kinds of sounds that are reaching your ears.
Where do they come from? Which sounds are natural, and which are made by humans?
Begin, in your own time, listening …
Are the sounds you hear one-off sounds, or do they repeat in some way?
What makes them repetitious?
Do they have a rhythm? What kinds of patterns are they making?
Are there chaotic sounds?
What changes? What repeats?
Think of long-term cycles versus quick cycles.
All sounds have durations—listen for sounds that are fleeting and sounds that persist.
Sense how different repetitions coincide or overlap.