Abstract: A sound output control device includes: an orientation detecting unit configured to detect a state of orientation of a face of a user; an ambient sound obtaining unit configured to obtain ambient sound; an ambient sound reducing processing unit configured to perform, based on the ambient sound, processing of reducing the ambient sound; and a sound output control unit configured to cause sound to be output with the ambient sound reduced by the ambient sound reducing processing unit, when the detected orientation of the face of the user is in a first state, and make audibility of the ambient sound higher than in a state where the ambient sound has been reduced by the ambient sound reducing processing unit, when the detected orientation of the face of the user is in a second state changed from the first state.

Abstract: A sound input-output control apparatus that can provide wider usage to a sound output apparatus are provided. The sound input-output control apparatus includes a distance determination unit configured to determine whether the distance between at least two of a plurality of sound output apparatuses each independently mounted on a user and configured to output sound toward the user is equal to or longer than a predetermined distance, and an operation control unit configured to control each of the sound output apparatuses to perform first operation when the distance between at least two of the plurality of sound output apparatuses is shorter than the predetermined distance, and control each of the sound output apparatuses to perform second operation when the distance between at least two of the plurality of sound output apparatuses is equal to or longer than the predetermined distance.