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Autoregressive Parameter Estimation with Dnn-Based Pre-Processing

机译:基于DNN的预处理自回归参数估计

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In this paper, a method for estimating the autoregressive parameters from a signal segment is proposed. The method is based on a deep neural network (DNN) in combination with the classical Levinson-Durbin recursion (LDR). The DNN acts as a pre-processor for the LDR and can be trained on different metrics commonly encountered in speech processing using a generalized analysis-by-synthesis (GABS) structure where the LDR acts as the encoder. Unlike end-to-end data-driven approaches, this structure ensures that the DNN is easy to train and initialize since the DNN only has to learn a simple mapping. The results confirm this and show that the proposed method produces an AR-spectrum that efficiently represents the speech spectrum in terms of the Itakura-Saito divergence, Kullback-Leibler divergence, log-spectral distortion, and speech distortion.
机译:本文提出了一种用于估计来自信号段的自回归参数的方法。 该方法基于深度神经网络(DNN)与经典的Levinson-Durbin递归(LDR)组合。 DNN作为LDR的预处理器,可以在使用广义分析(GAB)结构中的语音处理中通常遇到的不同度量培训,其中LDR充当编码器。 与端到端的数据驱动方法不同,这种结构可确保DNN易于培训和初始化,因为DNN仅必须学习简单的映射。 结果证实了并表明所提出的方法产生AR频谱,其有效地代表了Itakura-Saito发散,Kullback-Leibler发散,逻辑光谱失真和语音失真方面的语音频谱。

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