Analysis of impact noise induced by hitting of titanium head golf driver
The hitting of titanium head golf driver against golf ball creates a short duration, high frequency impact noise. We analyzed the spectra of these impact noises and evaluated the auditory hazards from exposure to the noises. Noises made by 10 titanium head golf drivers with five maximum hits were collected, and the spectra of the pure impact sounds were studied using a noise analysis program. The noise was measured at 1.7 m (position A) and 3.4 m (position B) from the hitting point in front of the hitter and at 3.4 m (position C) behind the hitting point. Average time duration was measured and auditory risk units (ARUs) at position A were calculated using the Auditory Hazard Assessment Algorithm for Humans. The average peak levels at position A were 119.9 dBA at the sound pressure level (SPL) peak and 100.0 dBA at the overall octave level. The average peak levels (SPL and overall octave level) at position B were 111.6 and 96.5 dBA, respectively, and at position C were 111.5 and 96.7 dBA, respectively. The average time duration and ARUs measured at position A were 120.6 ms and 194.9 units, respectively. Although impact noises made by titanium head golf drivers showed relatively low ARUs, individuals enjoying golf frequently may be susceptible to hearing loss due to the repeated exposure of this intense impact noise with short duration and high frequency. Unprotected exposure to impact noises should be limited to prevent cochleovestibular disorders.
KeywordsImpact noise Titanium Golf
This work was supported by the grant number 0420100560 from Seoul National University Hospital Research Fund and a clinical research grant from Seoul National University Boramae Medical Center.
Conflict of interest
- 5.Price GR (2005) A new method for rating hazard from intense sounds: implications of hearing protection, speech intelligibility, and situation awareness. In: Larkin WD, Dancer A, Buck K (eds) New directions for improving audio effectiveness, Amersfoort, Netherland, April 11–13. Research and Technology Organisation (NATO), Neuilly-sur-Seine, p KN2-1Google Scholar
- 6.Ryu JK, Jeon JY, Kim HS (2005) Development of noise annoyance scale and criteria of residential noises through auditory experiments. Trans KSNVE 15:904–910Google Scholar
- 12.Henderson et al (2010) Noise-induced hearing loss: implication for tinnitus. In: Aage RM, Berthold L, De Dirk R, Tobias K (eds) Textbook of tinnitus. Springer, New York, pp 301–309Google Scholar