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Area code, country code, and time difference information system and its field trial

机译:区号,国家代码和时间差别信息系统及其现场试验

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This paper describes an ASR system which responds to customer inquiries over a telephone network. Customer inquiries on area codes, country codes and time differences are one of the most popular items in information service of international telecommunication. This system called ACTIS (Area code, Country code and Time difference Information System) responds to these inquiries. ACTIS recognizes Japanese continuous speech and vocabulary including the names of 299 countries and 721 major cities throughout the world. We report on several technical features of the system including (1) new acoustic models using additional acoustic parameters, that is, acceleration of MFCC parameters and a log energy for increasing the recognition rate, (2) CMS (cepstrum mean subtraction) with compensation by recognition results for normalizing various channel characteristics and real-time operation, and (3) robust speech detection and out-of-vocabulary word detection for improving robustness to ambient noise, irrelevant sound and out-of-vocabulary words, along with their effects on computer simulation. We also report on results of field trial at KDD and a subjective assessment by users.
机译:本文介绍了一个ASR系统,它通过电话网络响应客户查询。客户查询区域代码,国家代码和时间差异是国际电信信息服务中最受欢迎的项目之一。该系统称为Actis(区域代码,国家/地区代码和时间差信息系统)响应这些查询。 actis承认日本的持续演讲和词汇,包括299个国家的名称和全世界721个主要城市。我们报告了系统的几种技术特征,包括(1)使用附加声学参数的新声学模型,即MFCC参数的加速和用于增加识别率,(2)CMS(CEPSTRUM意味着减法)的对数能量进行补偿识别结果进行正火各种信道特性和实时操作,以及(3)鲁棒语音检测和外的词汇字检测用于改进鲁棒性的环境噪声,不相关的声音和外的词汇,连同其上的效果计算机模拟。我们还报告了KDD现场试验结果以及用户的主观评估。

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