An audio system is described that receives a piece of sound program content for playback from a content distribution system. The piece of sound program content may include a multi-channel dialog signal and a combined multi-channel music and effects signal. The audio system may determine a first set of directivity patterns for the multi-channel dialog signal and a second set of directivity patterns for the combined multi-channel music and effects signal. The first set of directivity patterns associated with channels of the dialog signal may have higher directivity indexes than the second set of directivity patterns associated with corresponding channels of the music and effects signal. By associating dialog components with a higher directivity than music and effects components, the system increases the intelligibility of dialog for a piece of sound program content while allowing music and effects to retain conventional directivity having a typical ratio of direct-to-reverberant sound energy.