In professional audio engineering, the design of system sound quality includes reverberation time, sound construction design, calculation of signal dynamic range and transmission frequency characteristics, etc.
In the professional sound engineering, according to the purpose of the system and the proper reverberation time, whether its value is appropriate or not has a great relationship with the sound quality effect. A good indoor sound design is the basis for obtaining a good sound effect. To make full use of only the second reflection sound. In the middle of the front area of the auditorium, the audience's sense of hearing is often dry and loudness is insufficient due to the lack of only reflected sound. Therefore, in the design of room shape and sound construction, we should make full use of the reflected sound of the ceiling and side wall, and set up some necessary sound diffusers, so as to provide the area with an appropriate number of only reflected sound, and never use "soft bag" everywhere, so as to arrange its effect It can only backfire. In addition, the defects of sound quality such as focusing, echo, rigidity and covering up long reflected sound should be eliminated.
In professional audio engineering, the dynamic range of signal should be properly determined according to the purpose of the system. The larger the dynamic range of the system, the larger the drive power reserve of power amplifier is required and the larger the investment is. The dynamic range of the signal of the speech amplification system is smaller than the dynamic range of the music amplification, and the driving power of the power amplifier is generally about 1.1 ~ 1.2 times of the continuous power of the loudspeaker.