A sound processing apparatus comprising: detection means (A1010, C1010) for detecting a situation of a subject to be imaged from image data generated by imaging the subject to be imaged by imaging means; extraction means (A1003) for extracting a feature amount of a sound from sound data generated by sound acquisition means corresponding to the imaging means; a database (A1005, C1005) for holding feature amounts of specific sounds in association with the situation of the subject to be imaged; and determination means (A1004, A1006, A1007) for executing a process of comparing the feature amount of the sound extracted by the extraction means with the the feature amounts of specific sounds in accordance with the situation of the subject to be imaged detected by the detection means, thereby determining whether the sound contains one of the specific sounds, and monitoring an abnormality in the subject to be imaged based on said determining whether the sound contains one of the specific sounds, wherein the sound processing apparatus further comprises update means (A1011) for updating the feature amounts of the specific sounds held in the database based on the situation of the subject to be imaged detected by the detection means, such that, if feature amounts corresponding to the situation of the subject to be imaged detected by the detection means are not held in the database, these feature amounts are set in the database, and, if feature amounts not corresponding to the situation of the subject to be imaged detected by the detection means are held in the database, these feature amounts are deleted from the database, and wherein the determination means is adapted to compare the feature amounts of the specific sounds held in the updated database with the feature amount extracted by the extraction means. detection means (A1010, C1010) for detecting a situation of a subject to be imaged from image data generated by imaging the subject to be imaged by imaging means; extraction means (A1003) for extracting a feature amount of a sound from sound data generated by sound acquisition means corresponding to the imaging means; a database (A1005, C1005) for holding feature amounts of specific sounds in association with the situation of the subject to be imaged; and determination means (A1004, A1006, A1007) for executing a process of comparing the feature amount of the sound extracted by the extraction means with the the feature amounts of specific sounds in accordance with the situation of the subject to be imaged detected by the detection means, thereby determining whether the sound contains one of the specific sounds, and monitoring an abnormality in the subject to be imaged based on said determining whether the sound contains one of the specific sounds, wherein the sound processing apparatus further comprises update means (A1011) for updating the feature amounts of the specific sounds held in the database based on the situation of the subject to be imaged detected by the detection means, such that, if feature amounts corresponding to the situation of the subject to be imaged detected by the detection means are not held in the database, these feature amounts are set in the database, and, if feature amounts not corresponding to the situation of the subject to be imaged detected by the detection means are held in the database, these feature amounts are deleted from the database, and wherein the determination means is adapted to compare the feature amounts of the specific sounds held in the updated database with the feature amount extracted by the extraction means. <EOS>