infrasound
Kelime Anlamı :

1. Ses sınırı altı ses, duyulamayacak kadar düşük frekanslı ses.
Zıt Anlamlı Kelimeler :
ultrasound
Tanımlar :
1. A wave phenomenon sharing the physical nature of sound but with a range of frequencies below that of human hearing.
from The American Heritage® Dictionary of the English Language, 4th Edition
1. sound waves having frequency below the human audible range (below about 20 hz).
from Wiktionary, Creative Commons Attribution/Share-Alike License