This paper investigates the problem of "musical noise" and proposes a new algorithm to reduce it. Musical noise occurs in most of the spectral-estimation-based algorithms, such as spectral subtraction and minimum mean-square error short-time spectral amplitude estimator (MMSE-STSA). To reduce this type of noise, a novel algorithm, which is called two-dimensional spectogram enhancement, is proposed. A speech enhancement scheme is implemented by combining the proposed algorithm with the MMSE-STSA method. Spectogram comparisons show that with the proposed scheme, musical noise is effectively reduced with reference to MMSE-STSA. SNR and PESQ evaluations show that the proposed method is superior to MMSE-STSA and spectral subtraction with auditory masking method.

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doi.org/10.1109/HAVE.2003.1244726
2nd IEEE International Workshop on Haptic, Audio and Visual Environments and their Applications, HAVE 2003
Department of Systems and Computer Engineering

Lin, Z. (Zhong), & Goubran, R. (2003). Musical noise reduction in speech using two-dimensional spectrogram enhancement. Presented at the 2nd IEEE International Workshop on Haptic, Audio and Visual Environments and their Applications, HAVE 2003. doi:10.1109/HAVE.2003.1244726