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Sound frequency
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- 2. Who am I? Hi, I’m Yves from Belgium I’m going to give some info regarding sound frequency Headphones recommended
- 3. Audio Frequency Periodic vibration Pitchof sound How often a wave repeats within a fixed amount of time Measured in hertz (Hz) Heinrich Rudolf Hertz
- 4. Human hearing Humans canhear frequencies between 20 and 20.000 Hz (20 kHz) The older a person gets the less frequencies one can hear Hear damage can also be caused by exposure to loud music/sound Which ones can you hear ? https://www.youtube.com/watch?v=H-iCZElJ8m0
- 5. Animal hearing Animals canoften hear other frequency levels and/or a wider range Dogs: 40 Hz – 60 kHz Cats: 55 Hz – 79 kHz Bats: 1 kHz – 200 kHz
- 6. Wavelength Sound propagates aslongitudinal waves in air But sound waves are most often represented as a transverse wave:
- 7. Wavelength The wavelength ofa sound with a 20 Hz frequency is 17 meters This explains why you mostly hear bass (low frequency sounds) from a distance when a party/festival is going on
- 8. Wavelength The wavelength ofa sound with a 20 kHz frequency is 1,7 centimeters
- 9. Wavelength A 1500 Hzfrequency is more profound for humans as its wavelength fits between the ears This is because of the interaural time difference (ITD), the difference in arrival time of a sound between two ears
- 10. Instrument frequencies Piano First key(lowest note): 27,5 Hz Last key (highest note): 4186,01 Hz
- 11. Instrument frequencies Guitar 1st string(E): 329,63 Hz 2nd string (B): 246,94 Hz 3rd string (G): 196,00 Hz 4th string (D): 146,83 Hz 5th string (A): 110,00 Hz 6th string (E): 82,41 Hz
- 12. Vocal frequency range Soprano:262 Hz – 1047 Hz Mezzo-soprano: 110 Hz – 880 Hz Contralto: 175 Hz – 698 Hz Tenor: 130 Hz – 523 Hz Baritone: 87 Hz – 349 Hz Bass: 87 Hz – 330 Hz
- 13. Thank you Thank youfor watching this slideshow and I hope you picked up something new from it ! Feedback/corrections always welcome !