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. 2014 Jan 21;4(1):e003517. doi: 10.1136/bmjopen-2013-003517

Table 1.

Real-ear acoustical characteristics of sound impulses and swing speed generated by golf drivers

Club 1 Club 2 Club 3
Sound pressure level in the ear canal (dBA)
 Far-ear 100.3±1.3 85.7±1.2 87.0±1.3
 Near-ear 98.2±1.4 82.8±1.0 84.8±1.6
Frequency response in the ear canal (kHz)
 Far-ear 2.49±0.03 3.60±0.01 3.60±0.09
 Near-ear 2.53±0.03 3.37±0.11 3.44±0.08
Swing speed (kph) 166.5±15.4 169.0±15.4 168.9±17.3