| This paper was introduced the control system of audio effect and its developmentsituation at home and abroad.And the practicability of the adaptive acoustic field balancecontroller was verified in this paper. According to the characteristics of the the audiosignal, designed a system of adaptive equalization. The system was based on the softwareof Labview and the hardware of DSP.The traditional equalizer can only balance the audiotrack at the same time. And the new designed equalizer can control the audio trackrespectively and the control effect is very good. The adaptive acoustic field balancingsystem can adjust the electrical signals of different frequency to make up for the defect ofspeakers and sound field.And we can get the ideal effect of audio.In this paper, the characteristics of the several common filtering algorithms werecompared,and the adaptive filtering algorithm was studied in-depth. Through improve thestep of adaptive filtering algorithm, the better ability of anti-jamming can be get,in thecase of guarantee the algorithm a faster convergence speed. The algorithm canbe simulated by matlab. The effect of the improved algorithm has obvious improvementthan the previous algorithm. And the improved filtering algorithm is applied through theDSP.This paper also introduced how to select the main hardware and how to design theprogram of main controller. The hardware of control system is mainly composed ofTMS320VC5509、the stereo audio codec aic23and a set of power amplifier equipment.The main software is Labview, CCS3.3and so on. Through the combination of thehardwares and softwares, formed a set of closed loop control system with acquisition、processing and broadcast.Compared with the traditional analog audio equipment, this improved adaptiveacoustic field balance controller has a friendly man-machine interface, and easy to use.Through the acoustic field balance controller to improve the audio features of listeningroom, has a great significance to the whole sound system. |
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