This article is to discuss means of repetition in the respects of phonetic repetition, lexical repetition and syntactic repetition.

In this paper the system structure of DSR is first introduced, then the major techniques used such as the front-end feature extraction algorithm, feature compression, error correction and detection, as well as the server side speech reconstruction algorithm are analyzed, and finally the potential application of DSR is briefly discussed.

The modern English stress originates both from the Germanic Stress Rule(GSR),which is left-hand assignment,sensitive to morphology and insensitive to syllable weight,and the Romance Stress Rule(RSR),which is right-hand assignment,sensitive to syllable weight and insensitive to morphology.

As a supra-segmental feature, both English stress and Chinese "Qingsheng" can be surely compared to each other since they share much similarity in some linguistic functions on the lexical level.

This paper comparatively analyses the functions of English stress and Chinese neutral tone in phonemes, words and sentences from phonological, grammatical and semantic perspectives.