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在全国开展的城市监控报警联网建设工作可以说是安防行业2007年内的一件盛事。在城市监控报警联网系统的建设过程中,有许多人将安防对音频技术的要求,简单地理解为语音的编解码问题,如同安防的视频编解码理解为MPEG和AVS的自然简单的扩展一样。本文作者不希望误区继续。因此写下了此文,以努力为大家澄清一些音频方面的误区。本文试图通过对音频技术诸多方面的考察,从声音的采集、音频信号的编码解码、音频信息的存储和传输、声音的还原回放、音频数据的检索等方面做一些总结整理,以期向大家提供一个现代音频技术应用较为全面的概貌,启发大家寻找音频技术的新发展和应用新动向,使音频技术在安防领域甚至公安业务中得到更充分的应用。
In the country to carry out urban monitoring alarm network construction work can be said that the security industry in 2007 a major event. In the course of the construction of the urban monitoring and alarm network system, many people regard the requirements for security and audio technology as a simple speech coding and decoding problem, just as security video coding and decoding are understood as natural and simple extensions of MPEG and AVS. The author of this article does not want the error to continue. So I wrote this article in an effort to clarify some of my audio misunderstandings. This article tries to summarize and sort out many aspects of audio technology, such as sound collection, audio signal encoding and decoding, audio information storage and transmission, sound reduction and playback, audio data retrieval and so on, in order to provide you with a The application of modern audio technology is more comprehensive overview, inspired everyone to find new developments in audio technology and application of new trends in the field of security and even security of audio and video services to be more fully applied.