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Discriminative training for discrete HMM of a fixed-point DSP Mandarin digits recognition system

机译:定点DSP普通话数字识别系统离散HMM的判别训练

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Voice dialing technology is widely used in mobile phones, but most of them are based on speaker-dependent speech recognition, and cannot support dialing by saying the digits directly. Digit dialing requires speaker-independent speech recognition technology. The paper introduces a 16-bit fixed-point DSP based Mandarin digit recognition system based on discrete HMM, and discriminative training for the parameters. The parameters of the DHMM are reduced and only the truncated output probability matrices are used. A minimum classification error rate method is used to adjust the matrices discriminatively to improve the recognition accuracy further. In an experiment, a 14.4% error rate reduction is achieved.
机译:语音拨号技术已广泛用于移动电话中,但大多数基于基于说话者的语音识别,因此无法通过直接说出数字来支持拨号。数字拨号需要独立于说话者的语音识别技术。本文介绍了一种基于离散HMM的基于16位定点DSP的普通话数字识别系统,并对参数进行了判别式训练。减少DHMM的参数,仅使用截断的输出概率矩阵。最小分类错误率方法用于区分性地调整矩阵,以进一步提高识别精度。在实验中,错误率降低了14.4%。

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