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Ultrasonic Sound

Ultrasonic sound.


  • If a sound is too quiet, then no one will be able to hear it. - 34860
  Key words: Sound, Ultrasonic, Ultrasonic-Sound  

  Frequently Asked Questions (FAQ's)  

Question: What audio frequencies can be heard by the human ear?
  Answer: The human ear can hear sound wave frequencies in the approximate range of 20 to 20,000 Hertz. - 166

Question: How fast does sound waves travel?
  Answer: At sea level, sound vibrations travel in the air at a speed of approximately 1087 ft. (331 m) per second. - 167


  External related links to the world ...  

Find Sounds
 Find Sounds

 Search for sample sounds and sound effects at this file search engine.

findsounds.com - 881
Sound America
 Sound America

 The largest sound file site on the internet - containing free downloadable sound files from movies, television, cartoons, comedy, and sound effects.

soundamerica.com - 882
Sound Dogs
 Sound Dogs

 Sounddogs is a online source for sound effects, production music, sound clips, free sound effects samples and loops.

sounddogs.com - 883
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