A mixture interacting multiple model (MIMM) algorithm is proposed to enhanc
e speech contaminated by additive nonstationary noise. In this approach, a
mixture hidden filter model (HFM) is used for clean speech modeling and a s
ingle hidden filter is used for noise process modeling. The MIMM algorithm
gives better enhancement results than the IMM algorithm. The results show t
hat the proposed method offers performance gain compared to the previous re
sults in [2] with slightly increased complexity.