Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Thresholds at tail frequencies re CF threshold. A: thresholds relative to CF thresholds at frequencies 0.5 octave lower than CF. B: relative thresholds at frequencies 1 octave lower than CF. C: relative thresholds at frequencies 1.5 octave lower than CF. Flat lines indicate averages for CFs ≤3 and ≥4 kHz. Numbers of ANFs are indicated in each panel.
