The filter system is the most pivotal part of the digital audio equalizer;its precision and effect influence the whole audio equalizer performance.In this paper a new design method for audio equalizer is proposed

that is digital audio equalizer system based on Field Programmable Analogy Arrays (FPAA) of switch capacitance technology.With this method

the audio equalizer system will be greatly enhanced in convenience

efficiency and performance

low cost.The frequency responses of Elliptic function filters of switch capacitance is very closely to the ideal sound styles frequency response curves

which is a good system of the audio equalizer filters.With the further development of switch capacitance technology

current model and voltage model technology

FPAA will expect a considerable development and wider application in medical

instrument

senior audio

automatic test equipment

communications and motor vehicle etc.