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.
(Color online) Mean percentage of keywords correct across listeners as a function of distance of listener from the source for the modified DRR-based enhancement (circles and green line), modified ITD-based enhancement (triangles and blue line), and no enhancement (squares and red line). Error bars show standard errors.
