Noise Health Close
 

Figure 12. Noise level (1/3 oct. bands) in a turboprop plane (solid thick line); noise level at the pilot's ear: (i) with a single hearing protection, (ii) with a double hearing protection (dashed lines), masking curves (solid thin lines), unmasked speech with a double hearing protection (diagonal black/white striped area)

Figure 12. Noise level (1/3 oct. bands) in a turboprop plane (solid thick line); noise level at the pilot's ear: (i) with a single hearing protection, (ii) with a double hearing protection (dashed lines), masking curves (solid thin lines), unmasked speech with a double hearing protection (diagonal black/white striped area)