微处理器芯片的生态建设是高端装备与智能微系统自主、可控的关键,尽管国产数字信号处理(digital signal processing,DSP)器件及其相关开发应用技术近年来得到了一定的发展,但与需求仍存在较大差距.在主动噪声控制领域,前馈型多通道控制方案比单通道有较大的控制范围和较好的性能,但对系统的运算能力有较高的要求.文章以多通道FxLMS算法为基础,对多通道降噪系统的运算量进行了分析,依据国产DSP开发板的电路结构,设计了控制系统方案,并进行了实验研究.实验表明,所设计的噪声控制系统运算效率较ARM作为运算器提高了80%,对100～1 000 Hz内的周期性噪声信号衰减达到15～20 dB,证明了该方案的正确性.
Design of active noise control system for the HKSEDSPC6713 series of DSP
The ecological construction of microprocessor chips is the key to the autonomy and controllability of high-end equipment and intelligent microsystems.Although the domestic digital signal processing(DSP)devices and their related development and application technologies have been developed in recent years,there is still a large gap with the demand;in the field of active noise control,the feed-forward multi-channel control scheme effect has a larger control range and better performance than single channel,but has higher requirements on the computing power of the system In this paper analyzes the computing power of the multi-channel noise reduction system based on the multi-channel FxLMS algorithm is analyzed,and a control system scheme based on the circuit structure of a domestic DSP development board is designed and conducts an experimental study is conducted.The results show that the designed noise control system has 80%higher computing efficiency than ARM as an operator,and the attenuation of the periodic noise signal within 100-1 000 Hz reaches 15-20 dB,which proves the correctness of the scheme.
active noise controlfeed-forward typemulti-channeldomestic digital signal processing(DSP)development board
万方数据
维普
