面向主动降噪验证的AD/DA测试平台设计  

AD/DA Test Platform Design for ANC Verification

作　　者：郭振伟 周静雷[1,2] 付中华 李腾飞 GUO Zhenwei;ZHOU Jinglei;FU Zhonghua;LI Tengfei(College of Electronic Information,Xi'an Polytechnic University,Xi'an 710600,China;Xi'an iFLYTEK Hyper-brain Information Technology Co.,Xi'an 710076,China;Computer Science and Technology,Northwestern Polytechnical University,Xi'an 710072,China)

机构地区：[1]西安工程大学电子信息学院,西安710600 [2]西安讯飞超脑信息科技有限公司,西安710076 [3]西北工业大学计算机学院,西安710072

出　　处：《计算机测量与控制》2025年第2期44-53,共10页Computer Measurement &Control

摘　　要：针对主动降噪算法程序调试难度大、相关滤波器结构可视化程度差、硬件平台底噪大的问题,设计了一款底噪小、程序可视化程度高、搭建模型简单的AD/DA硬件验证平台(AKM平台);相比较传统的ANC调试过程,AKM平台在降噪算法验证过程中不需要编写程序,仅需要基于Simulink HDL模块化工具搭建仿真模型,生成Bitstream文件,将其烧录到验证平台即可实现算法的验证,有效避免了开发者编写和调试程序过程的复杂性,最终实现了一款操作高效的ANC算法验证平台;实验结果表明,该系统在输入激励信号为1 kHz 100 mV,采样率为32 kHz 24 bit的条件下,测试输出信号的总谐波失真为0.005217%;信噪比为98.295 dB;在不输入任何激励信号的情况下,系统平台的底噪为5.360μVrms。Aiming at the problems of difficult debugging of active noise cancellation(ANC)algorithm program,poor visualization of related filter structures,and large bottom noise of hardware platforms,an AD/DA hardware validation platform(AKM platform)with small bottom noise,high program visualization,and easy to build model is designed.Compared with traditional ANC debugging process,the AKM platform does not require to write a program during the verification process of noise reduction algorithm,but only needs to build a simulation model based on the Simulink HDL modularization tool,generate a Bitstream file,and then burn it into the verification platform to realize the verification of the algorithm,which effectively avoids the complexity of developers writing and debugging programs,and ultimately realizes an efficient verification platform of the ANC algorithm.Experimental results show that the total harmonic distortion of output signal is 0.005217%and the signal-to-noise ratio is 98.295 dB,with an input signal of 1 kHz 100 mV,and a sampling rate of 32 kHz and a precision of 24 bits,and the floor noise of the platform is 5.360μVrms without any input signal.

关 键 词：ANC验证 ADDA平台 无需编程 总谐波失真小 低失真 底噪小 

分 类 号：TP202[自动化与计算机技术—检测技术与自动化装置]