\section*{Acronyms}                            
\begin{acronym}[ANR] 
  \acro{ANR}{Adaptive Noise Reduction}
  \acro{ANC}{Adaptive Noise Cancellation}
  \acro{DSP}{Digital Signal Processor}
  \acro{CI}{Cochlear Implant}
  \acro{WHO}{World Health Organization}
  \acro{FIR}{Finite Impulse Response}
  \acro{IIR}{Infinite Impulse Response}
\end{acronym}