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