In this paper, the historical development of acoustics has been briefly reviewed. It can be concluded that acoustics study has been developed along with the same atream of the historical developments of science and te...In this paper, the historical development of acoustics has been briefly reviewed. It can be concluded that acoustics study has been developed along with the same atream of the historical developments of science and technology, the category of acoustics has changed from the nature-oriented and passive physical acoustics to the human-oriented and active information acoustics. It has been extended over a variety of wide fields.展开更多
This paper describes a fundamental consideration on our works on the design of general Bayes' filters for the state estimation of non-stationary, non-linear, and non-Gaussian environmental sound and vibration syst...This paper describes a fundamental consideration on our works on the design of general Bayes' filters for the state estimation of non-stationary, non-linear, and non-Gaussian environmental sound and vibration systems. We have discussed an essential point of several Bayes' filters proposed by using the orthogonal or non-orthogonal expansion form of Bayes' theorem. They can estimate any kinds of statistics of arbitrary function type of state variables including the lower and the higher order statistics connected with the Lx evaluation index in the environmental sound and vibration systems. Here, we have mainly focussed on giving the fundamental viewpoints of their design policies. Some new estimation methods and new results not yet published are included.展开更多
文摘In this paper, the historical development of acoustics has been briefly reviewed. It can be concluded that acoustics study has been developed along with the same atream of the historical developments of science and technology, the category of acoustics has changed from the nature-oriented and passive physical acoustics to the human-oriented and active information acoustics. It has been extended over a variety of wide fields.
文摘This paper describes a fundamental consideration on our works on the design of general Bayes' filters for the state estimation of non-stationary, non-linear, and non-Gaussian environmental sound and vibration systems. We have discussed an essential point of several Bayes' filters proposed by using the orthogonal or non-orthogonal expansion form of Bayes' theorem. They can estimate any kinds of statistics of arbitrary function type of state variables including the lower and the higher order statistics connected with the Lx evaluation index in the environmental sound and vibration systems. Here, we have mainly focussed on giving the fundamental viewpoints of their design policies. Some new estimation methods and new results not yet published are included.