Commercially available active noise control headphones rely on fixed analog controllers to drive "anti-noise" loudspeakers. Our design uses an adaptive controller to optimally cancel unwanted acoustic noise. This headphone would be particularly useful for workers who operate or work near heavy machinery and engines because the noise is selectively eliminated. Desired sounds, such as speech and warning signals, are left to be heard clearly. The adaptive control algorithm is implemented on a Texas Instruments (TI™ ) 1 TMS320C30GEL digital signal processor (DSP), which drives a Sony CD550 headphone/microphone system. Our experiments indicate that adaptive noise control results in a dramatic improvement in performance over fixed noise control. This improvement is due to the availability of high-performance programmable DSPs and the self-optimizing and tracking capabilities of the adaptive controller in response to the surrounding noise.
标签: Commercially controllers headphones available
上传时间: 2013-12-04
上传用户:dyctj
Solve Ax=B with Crout s method
上传时间: 2017-09-11
上传用户:许小华
该程序是用来计算互联发电系统的可靠性。该系统是由两个发电系统A、B,经两台变压器和两条并联输电线路连结在一起
上传时间: 2017-09-11
上传用户:saharawalker
一款基于B/S方式的专业网络考试系统。本考试支持名词解释、填空题、判断题、单选题、多选题、简答题、论述题、阅读理解,而且考试各题型的题量可以由管理员自己设定。 试卷可以分随机出卷和人工出卷,并有相应权限的老师进行批改
上传时间: 2017-09-14
上传用户:TF2015
A服务器和B服务器同步,还包括添加删除修改的触发器
上传时间: 2017-09-15
上传用户:671145514
该在线考试关系统(B/S结构)主要采用JAVA语言开发涉及主要WEB技术有:Struts+Spring+Hibernate框架,html,javascript,css,ajax技术。开发工具:MyEclipse 服务器:tomacat5.5 数据库:oracle9
标签: Hibernate Struts Spring JAVA
上传时间: 2017-09-16
上传用户:秦莞尔w
m a t l a b 编 程 实 例!
标签:
上传时间: 2013-12-21
上传用户:skfreeman
用j2ee开发的b/s通讯录. 欢迎各位使用
上传时间: 2014-01-17
上传用户:pinksun9
实现计算数字a选数字b的组合结果。程序机构简单,在matlab里面输入文件名字和组合参数就可以运行。
上传时间: 2017-09-17
上传用户:change0329
本系统以采用一种结合B/S和Web的方式开发的中小企业办公自动化系统为例讨论办公自动化系统的设计与实现。
上传时间: 2014-01-15
上传用户:xwd2010