Reverberation is caused by multiple sound reflections in the listening environment. These reflections, which are delayed versions of the original sound, sum at the ear and result in a temporal distortion of the original sound. Although reverberation also provides an overall amplification of sound, and can improve certain aspects of the listening experience, such as the enjoyment of music or the ability to tell how far away a sound source is located, the temporal distortions caused by reverberation often make speech more difficult to understand. These negative effects of reverberation are compounded by background noise, which, like reverberation, is a hallmark of most everyday listening situations. Current hearing aid amplification strategies often provide limited benefit in situations with high reverberation or background noise. It is therefore important to find ways to minimize the negative impacts of reverberation and background noise. This session will address the basic challenges to hearing in reverberation and will summarize fundamental and current research in the area.