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    • 1. 发明授权
    • Method for direct recognition of encoded speech data
    • 用于直接识别编码语音数据的方法
    • US06223157B1
    • 2001-04-24
    • US09074726
    • 1998-05-07
    • Thomas D. FisherJeffery J. SpiessDearborn R. Mowry
    • Thomas D. FisherJeffery J. SpiessDearborn R. Mowry
    • G10L1904
    • G10L15/30G10L15/02
    • Digital Cellular telephony requires voice compression designed to minimize the bandwidth required for the digital cellular channel. The features used in speech recognition have similar components to those used in the vocoding process. The present invention provides a system that bypasses the de-compression or decoding phase of the vocoding and converts the digital cellular parameters directly into features that can be processed by a recognition engine. More specifically, the present invention provides a system and method for mapping a vocoded representation of parameters defining speech components, which in turn define a particular waveform, into a base feature type representation of parameters defining speech components (e.g. LPC parameters), which in turn define the same digital waveform.
    • 数字蜂窝电话需要语音压缩,旨在最小化数字蜂窝信道所需的带宽。 语音识别中使用的特征与声码过程中使用的特征具有相似的组成部分。 本发明提供了一种绕过声码的去压缩或解码阶段的系统,并将数字蜂窝参数直接转换成可由识别引擎处理的特征。 更具体地说,本发明提供一种系统和方法,用于将定义语音分量的参数的语音代码表示(其又将特定波形)映射成定义语音分量(例如LPC参数)的参数的基本特征类型表示,其依次 定义相同的数字波形。