How far can sound waves travel?

If the sound waves travel too far they give all of their energy to increasing the temperature of the air (no matter how little the change is) and as a result the sound waves cannot sustain their motion, and - THE SOUND STOPS MOVING. read more

The distance that sound can travel depends on what medium the sound wave has to go through. The speed of the wave affects the distance that it can travel. Temperature and atmospheric pressure also can directly affect the amount of distance a sound wave can cover. read more

The channeling of sound waves allows sound to travel thousands of miles without the signal losing considerable energy. In fact, hydrophones, or underwater microphones, if placed at the proper depth, can pick up whale songs and manmade noises from many kilometers away. read more