| CPC G04G 21/025 (2013.01) [A61B 5/4812 (2013.01); G04G 13/02 (2013.01)] | 27 Claims |

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1. An information processing apparatus comprising:
a memory storing a computer-readable program; and
one or more processors that, when executing the computer-readable program, perform:
selecting a sound to be outputted from a sound candidate group,
outputting the selected sound when an output condition is satisfied,
estimating a sleep state of a user based on a result of measurement by a sensor configured to measure body motion of the user,
calculating hours of sleep of the user based on the estimated sleep state of the user, and
adding a new sound to the sound candidate group based on the calculated hours of sleep of the user.
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