A spiking neural network for real-time Spanish vowel phonemes recognition

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• 作者：L. Mir&oacute ; -Amarante ; ^lmiro@us.esAuthor Vitae ; F. G&oacute ; mez-Rodrí ; guezAuthor Vitae ; A. Jimé ; nez-Ferná ; ndezAuthor Vitae ; G. Jimé ; nez-MorenoAuthor Vitae
• 关键词：Neuromorphic engineering ; Address event representation (AER) ; Event-based processing ; FPGA ; Digital cochlea ; Speech recognition
• 刊名：Neurocomputing
• 出版年：2017
• 出版时间：22 February 2017
• 年：2017
• 卷：226
• 期：Complete
• 页码：249-261
• 全文大小：1501 K
• 卷排序：226

文摘

This paper explores neuromorphic approach capabilities applied to real-time speech processing. A spiking recognition neural network composed of three types of neurons is proposed. These neurons are based on an integrative and fire model and are capable of recognizing auditory frequency patterns, such as vowel phonemes; words are recognized as sequences of vowel phonemes. For demonstrating real-time operation, a complete spiking recognition neural network has been described in VHDL for detecting certain Spanish words, and it has been tested in a FPGA platform. This is a stand-alone and fully hardware system that allows to embed it in a mobile system. To stimulate the network, a spiking digital-filter-based cochlea has been implemented in VHDL. In the implementation, an Address Event Representation (AER) is used for transmitting information between neurons.