If the sound is spread in the air with a speed of 340 meters per second, much slower, deceptive auditory impressions would be observed more frequently.
Imagine, for example, that the sound runs in a moment of 340 m, and, say, 340 mm, i.e., moves slower pedestrians. Sitting in a chair, you listen to the story of your friend who has a habit of saying, pacing back and forth across the room. Under ordinary circumstances this rasagiline does not prevent you to listen to, but at a reduced speed of sound you nothing will understand from the speech of your guest: sounds before said, will be to catch up with new and mixed with them, you will have a confusion of sounds, devoid of any meaning.
Incidentally, in those moments when a visitor approaches, the sound of his words will reach you in reverse order: first, until you sounds just spoken, then the sounds of spoken earlier, then even earlier, and so on, because saying ahead of their sounds and is all the time ahead of them, continuing to publish new ones. Of all phrases, spoken in such conditions, you could understand only that which a great fight once astonished young Carp from the "Bursa" Pomianowska *:
"I go with sword of justice".
* Strictly speaking, this is not quite true: we say at once, not individual letters, and whole syllables. The phrase you will hear something like this: I di-su m-Cho-mo do-and-I.