Algorithm for removing of back ground noise from speech recordings

hello,i searched in internet for any Algorithm for removing of back ground noise for recording of speeches then after got some information for spectral subs traction method.please any one having matlab programme for that algorthim post to me,i need urgent.

[Image Analyst]

Do you want us to delete your earlier near-duplicate question: http://www.mathworks.com/matlabcentral/answers/86883-removing-of-noise-from-speech-recordings?