The addition of the directional machine to super short-wave ground/air communication station can produce an irritating noise which is a coloured additional noise. The reason is that the periodic signal which is produced by the directional machine to control the antenna gets In the receive circruit. In this paper a speech noise elimination algorithm is put forward based on the noise produce model. By using this algorithm , We can eliminate the noise successfully. This algorithm can also be suit for the elimination of additional noises.