求翻译：根据词汇量大小分为: 小词汇量、中词汇量、大词汇量以及无限词汇量语音识别系统。目前, 大词汇量非特定人的连续语音识别的技术仍然不是很成熟, 难点在于鲁棒性、噪声问题、语音识别基元的选择、端点监测、韵律信息的利用等问题上, 但是它们中的大多数系统都是基于HMM 技术模型来实现。是什么意思？

Depending on the size of the vocabulary is divided into: small vocabulary, vocabulary, vocabulary, and unlimited vocabulary speech recognition system. At present, non-specific people in large vocabulary continuous speech recognition technology is still not very mature and difficult is the issue of r

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Depending on the size vocabulary is divided into: small vocabulary, vocabulary, vocabulary, and unlimited vocabulary speech recognition systems. At present, the speaker-large vocabulary continuous speech recognition technology is still not very mature, robustness, noise problems, difficulty with spe

Divides into according to the vocabulary size: Small vocabulary, vocabulary, big vocabulary as well as infinite vocabulary speech recognition system.At present, the big vocabulary non-specific person's continual speech recognition technology was still not very mature, the difficulty lies in robust,