AMR語音編碼器與參考模型

AMR Speech Coder and AMR Reference Model

聶永祥(Yung-Hsiang Nieh)

指導教授 ： 劉玉蓀

國立臺北科技大學/電資學院/電子電腦與通訊產業研發碩士專班/碩士(2007年)

摘要

本篇論文探討的規格以適應性多重速率(Adaptive Mulit-Rate, AMR)相關原理為主，由於AMR語音編碼規格的份量都不少且相當複雜不易瞭解，使得通訊研發工程師往往不知該如何著手或是仍需要一段時間進行瞭解。
藉由開發AMR參考模型的過程，使用統一塑模語言(Unified Modeling Language, UML)分析與設計之後，得到AMR參考模型，當AMR參考模型開發完成之後，這個AMR參考模型即可提供參考模型使用者來使用，即訂下AMR參考模型的標準。因此，可藉由本篇論文提出的AMR參考模型，即時提供對AMR技術有需要的公司，節省通訊研發工程師不少研究與開發的時效。在競爭激烈的通訊科技業，商業化通訊產品研發時效的縮短，是爭取新通訊商品上市成功先機與高獲利的重要關鍵。
最後，依據AMR參考模型，再自行開發出行動電話上的語音加值服務，其中，所新增的語音加值服務，以不變動AMR接收端原始通訊規格的軟體程式內容為準則，目的是要應用給使用者在行動電話的使用，並且驗証AMR參考模型的可行性與實用性。

關鍵字

適應性多重速率 ； 不連續傳輸 ； AMR參考模型 ； 統一塑模語言

並列摘要

This paper is pertinent to the principle based Adaptive Mulit-Rate (AMR) and its relevant theory. As the AMR speech coding specifications and simulation programs are complicated and not easy to understand, it takes a lot of time for the R&D (Research and Development) engineers to understand its structure.
With the development of AMR, use Unified Modeling Language (UML) for analysis and design to get a reference model of AMR. This model is provided to different people for use. Furthermore, it is also a pre-requisite for setting standards for AMR reference model. It satisfies the needs of AMR Technology Company which requires techniques in real time in order to save the developing time for communication and research department engineer. This is a pre-requisite, since in such a highly competitive telecommunication industry developing time needs to be very less, as the commercialization of R&D products has become a key point to obtain maximum profits.
Finally, the paper proposes an AMR reference model and develops a value added service via speech system without changing the content of the program and maintaining the communication specifications of the AMR receiver. The purpose is to allow the mobile users take benefit of this reference model and examine all the possibilities and practicalities of it.

並列關鍵字

AMR ； DTX ； AMR Reference Model ； Unified Modeling Language

參考文獻

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