Seudónimo Seudónimo 30-01-2020 Biology contestada If the vibrations have a low frequency, the sound is heard as a _______. If the vibrations have a high frequency, then the sound is heard as a _______. A. loud sound; soft sound B. soft sound; loud sound C. high-pitched sound; low-pitched sound D. low-pitched sound; high-pitched sound 100 POINTS!!!