5What is Special About this Machine?Adaptive Mode and Manual ModeIn Internal Audio Mode (when no Audio Cable is attached) the AdaptiveButton switches between Adaptive Mode and Manual Mode. The light next tothe Adaptive Button is on in Adaptive Mode and off when in Manual Mode.In Adaptive Mode, nomad adapts to noise in your room. It listens fordisruptive noises and raises the volume and/or adds enhancing sounds(richness) to the SoundStory when it detects intrusive noises.In Manual Mode the unit still listens but does not significantly change itsvolume in response to noise. Instead, it maintains a relatively constantvolume level determined by the Volume Up/Down Buttons.RichnessRichness adds character to each SoundStory by dynamically mixing soundsto avoid repetition. The Richness Level controls how the sounds are mixed.(See Page 7 for usage of the Richness and Adaptive Buttons in External Audio mode)Richness may be set to one of four levels in Internal Audio Mode:High: These SoundStories are the most complex. For example, in theOCEAN setting, the sound of a fog horn or barking sea lion is occasionallyheard. In the RAIN setting, a thunderclap is often heard and wind is moreprevalent. In the BROOK setting, frogs croak.Medium: Moderate sounds are incorporated into the SoundStory. Forexample, in the OCEAN setting additional sounds such as bird song areplayed but they occur less often than in the High Richness Level.Low: Designed for sleep, the SoundStory will play at a steady, continuouslevel. OCEAN: mostly wave sounds with a few soft birds, BROOK: no frogsOff: Designed for the most sensitive sleepers, the SoundStory will play at itsmost consistent level. Few, if any, additional sounds are included.Note: The NOISES SoundStory settings operate with Richness off. Accordingly, forthe NOISES SoundStory only, the Richness Level selects the SoundStory variant tobe played: Off: BROWN NOISE, Low: PINK NOISE, Medium: WHITE NOISE, High:ELECTRIC FAN.Richness Button(selects Richness Level)Adaptive Button(selects Mode)Both lights on: HighLeft light only: MediumRight light only: LowNo lights on: OffLight on: Adaptive ModeLight off: Manual Mode