The device which executes subjective quality presumption manner and this manner which use the objective quality measurement equipment

摘要

To provide a subjective quality estimating method for deriving the lowest evaluation frequency by paying attention to the mean number obtained when objective evaluation results are average and a device which implements this method. SOLUTION: By the subjective quality estimation method, when an objective quality measuring instrument loaded with a PROGRAM for implementing a voice objective evaluation method and sound transmission paths which are so set as to deteriorate sound quality are used to estimate subjective evaluation results of the sound transmission paths by using sounds having deteriorated through the sound transmission paths and the lowest evaluation frequency is derived by paying attention to the mean number when the objective evaluation results are average. The device implementing the method is provided.