@Aya2002..Thanx i got it...
i m working on Speech Enhancement project..please tell me that frequency range of Human speech is 0 to 4 kHz..so it related to Narrow band ?? and which speech is related to Broadband...
@rakesh_vnit : i read from 1 site that white Guassian Noise has frequency Range of 10 Hz to 500Khz...so i did find that link again ..so that y m confused