Abstract: An articulation abnormality detection method includes: calculating an acoustic feature from utterance data of a speaker; calculating, from the acoustic feature, a first speaker feature indicating a speaker characteristic of the utterance data by using a trained deep neural network (DNN); calculating a degree of similarity between a second speaker feature of the speaker and the first speaker feature, where the second speaker feature is a speaker feature obtained when the speaker articulated properly; and determining whether the speaker has an articulation abnormality, based on the degree of similarity.

Abstract: A mask including: a mask main body 11; and a cord 12 that is placed over both ears or the head of a wearer to fix the mask main body 11 at a specific position on the face of the wearer, wherein the mask main body includes an inner layer 15 that is positioned on the side of the mouth of the wearer when the mask is being worn, an outer layer 17 that is on the outside of the mask when the mask is being worn, and a filter layer 16 that is positioned between the inner layer 15 and the outer layer 17, the filter layer 16 including two or more layers of a melt blown nonwoven fabric layer.

Abstract: There is provided a mask that includes a mask body and two strings. The two strings hold the mask body at a predetermined position on the face of a wearer by being caught by both ears or the head of the wearer. Folded portions, which are adapted so as to be capable of rising and falling on the surface of the mask body coming into contact with the face of the wearer, are formed on both sides of the mask body.

Abstract: A mask including: a mask main body 11; and a cord 12 that is placed over both ears or the head of a wearer to fix the mask main body 11 at a specific position on the face of the wearer, wherein the mask main body includes an inner layer 15 that is positioned on the side of the mouth of the wearer when the mask is being worn, an outer layer 17 that is on the outside of the mask when the mask is being worn, and a filter layer 16 that is positioned between the inner layer 15 and the outer layer 17, the filter layer 16 including two or more layers of a melt blown nonwoven fabric layer.

Abstract: There is provided a mask that includes a mask body and two strings. The two strings hold the mask body at a predetermined position on the face of a wearer by being caught by both ears or the head of the wearer. Folded portions, which are adapted so as to be capable of rising and falling on the surface of the mask body coming into contact with the face of the wearer, are formed on both sides of the mask body.