Supposing that the condition of diffusive sound field is known,a method to handle room sound field is given to avoid the complicated mathematical derivation,using system theory and statistics.

This paper presents sound characteristics of room sound field from architectural acoustics parameters and acoustics parameters and sound system characteristics and speech articulation.

The progress in room acoustics is discussed, including researches on room sound field, sound absorption of room and acoustic quality of hall.

In this paper the sound field properties and the corresponding physical parameters were calculated and analyzed by room acoustical computer simulation program, and the room acoustics scheme proposed by the preliminary acoustical design was discussed.

This article gives a survey on the current technology of the computer simulation of room acoustics,as known as the construction of virtual acoustical environment.

With the development of room acoustics,the indexes for the description of sound fields in rooms have been expanded to a series of parameters characterizing time,energy and space.

The measurement system(called RRS) is composed of a repeatedly inspirited sound source associated with a slowly rotating microphone,and the measured result is equivalent to that of using a round microphone array in room acoustics measurement.

Some of the physical parameters for evaluating auditorium sound quality, which are always used by room acoustics specialists, are correlative.

According to room acoustics theory, the required acoustic principles of audition room and how to do architectural acoustic design are given, emphasizing related issues of hi-channel stereo and multi-channel surround sound.