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改进的基于响度域的语音增强算法 被引量:3

Improved Speech Enhancement Algorithm Based on Loudness Domain
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摘要 针对短时谱幅度最小均方误差估计(MMSE-STSA)语音增强算法在非平稳噪声环境下噪声抑制能力较差的问题,提出一种改进的MMSE-STSA算法。该算法在响度域进行谱幅度估计,并采取基于概率的语音判决方法。实验结果表明,相比传统的MMSE-STSA算法,改进算法在非平稳噪声环境下能够获得更好的语音质量。 Due to the poor performance of traditional Minimum Mean Square Error Short-Time Spectral Amplitude estimator(MMSE-STSA) algorithm in non-stationary noise environment, this paper proposes an improved MMSE-STSA speech enhancement algorithm, which is based on a loudness-domain MMSE estimator in the frequency domain, and uses a probability-based voice decision method. Simulation result indicates that it has better performance than traditional MMSE-STSA algorithm in non-stationary noise environment.
出处 《计算机工程》 CAS CSCD 北大核心 2011年第3期290-292,共3页 Computer Engineering
基金 国家自然科学基金资助项目(60901080) 湖南省高等学校科学研究基金资助项目(09C1257 08D095)
关键词 语音增强 信噪比 短时谱幅度最小均方误差估计 响度域 speech enhancement SNR Minimum Mean Square Error Short-Time Spectral Amplitude estimator(MMSE-STSA) loudness domain
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