Noise Estimation Algorithms for Speech Enhancement in Highly Non-Stationary Environments

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A noise estimation algorithm plays an important role in speech enhancement. Speech enhancement for automatic speaker recognition system, Man - Machine communication, Voice recognition systems, speech coders, Hearing aids, Video conferencing and many applications are related to speech processing. All these systems are real world systems and input available for these systems is only the noisy speech signal, before applying to these systems the authors have to remove the noise component from noisy speech signal means enhanced speech signal can be applied to these systems. In most speech enhancement algorithms, it is assumed that an estimate of noise spectrum is available.