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57 <br /> Table 12 Some common sound levels, dB(A)1 <br /> and subjective response ranges. <br /> 14, Sound Subjective <br /> Level InT2.1.1tE Evaluations <br /> 140 Jet engine <br /> 130 „ Threshold of pain <br /> 120 Threshold of feeling - hard rock. band Deafening <br /> 110 <br /> 100 Loud auto horn at 10 ft away <br /> Noisy factory Very loud <br /> • 90 <br /> Range where permanent hearing damage begins <br /> 80 School cafeteria w/untreated surfaces <br /> 70 <br /> Loud <br /> . 4; <br /> Range of speech <br /> 60 <br /> 50 Average office Moderate <br /> 40 Soft music in apartment <br /> 30 Average residence without major disturbance Faint <br /> 20 Whisper <br /> 10 Very faint <br /> 0 Threshold of audibility for a 1000 Hz <br /> pure tone <br />