An acoustic space creation apparatus comprising: a camera that captures an object; a light source that irradiates the object; an input unit that acquires images from the camera; a processing unit that selects a sound to be generated corresponding to a frame of the video; a plurality of speakers that output a sound selected by the processing unit, wherein the processing unit is configured to compare a light amount in the frame with a light amount in a frame immediately before the frame and determines whether the object is in a motion state or a stop state based on a predetermined threshold for light amount, when the object is determined to be in a motion state, the processing unit is configured to generate a motion detection signal, selects a musical pitch to be output in accordance with a pre-stored musical structure program, allocate one of the plurality of speakers to each sound of the selected musical pitch in accordance with a pre-stored spatial structure program, and cause the allocated speaker to output the sound the apparatus being characterised in that, when the motion state consecutively occurs a first predetermined number of times during a first unit time, the number of times of the consecutive occurrences for the first predetermined number of times reaches a second predetermined number of times, the object is determined to be in a motion state after having been in a stop state during a second unit time or greater, and a specific speaker among the plurality of speakers is allocated to a predetermined sound, the processing unit causes the specific speaker to generate a sine wave in accordance with the musical structure program, when the motion state consecutively occurs the first predetermined number of times during the first unit time, the number of times of the consecutive occurrences for the first predetermined number of times reaches a third predetermined number of times, the object is determined to be in a motion state after having been in a stop state during the second unit time or greater, and the specific speaker is allocated to the selected sound, the processing unit causes the specific speaker to output a first reverberation sound in accordance with the musical structure program, and when the motion state consecutively occurs a fourth predetermined number of times during the first unit time, the processing unit causes the speaker to output a second reverberation sound in a predetermined order in accordance with the musical structure program. a camera that captures an object; a light source that irradiates the object; an input unit that acquires images from the camera; a processing unit that selects a sound to be generated corresponding to a frame of the video; a plurality of speakers that output a sound selected by the processing unit, wherein the processing unit is configured to compare a light amount in the frame with a light amount in a frame immediately before the frame and determines whether the object is in a motion state or a stop state based on a predetermined threshold for light amount, when the object is determined to be in a motion state, the processing unit is configured to generate a motion detection signal, selects a musical pitch to be output in accordance with a pre-stored musical structure program, allocate one of the plurality of speakers to each sound of the selected musical pitch in accordance with a pre-stored spatial structure program, and cause the allocated speaker to output the sound the apparatus being characterised in that, when the motion state consecutively occurs a first predetermined number of times during a first unit time, the number of times of the consecutive occurrences for the first predetermined number of times reaches a second predetermined number of times, the object is determined to be in a motion state after having been in a stop state during a second unit time or greater, and a specific speaker among the plurality of speakers is allocated to a predetermined sound, the processing unit causes the specific speaker to generate a sine wave in accordance with the musical structure program, when the motion state consecutively occurs the first predetermined number of times during the first unit time, the number of times of the consecutive occurrences for the first predetermined number of times reaches a third predetermined number of times, the object is determined to be in a motion state after having been in a stop state during the second unit time or greater, and the specific speaker is allocated to the selected sound, the processing unit causes the specific speaker to output a first reverberation sound in accordance with the musical structure program, and when the motion state consecutively occurs a fourth predetermined number of times during the first unit time, the processing unit causes the speaker to output a second reverberation sound in a predetermined order in accordance with the musical structure program.