In light of the records, although the defendant can know that there is a certain degree of speech disorder, there is no evidence to recognize that there is an obstacle to hearing function.

Therefore, the court below's failure to reduce the reduction of the deaf-mutes under Article 11 of the Criminal Act is just, and there is no error in the misapprehension of legal principles or omission of judgment as to reduction of the deaf-mutes.

Therefore, the appeal is dismissed. It is so decided as per Disposition by the assent of all participating Justices on the bench.