The g . 726 speech coding algorithm involves adaptive linear prediction to eliminate the correlation of signal waveform , so as to reduce the resulting bit rate G . 726建議采用自適應(yīng)預(yù)測編碼,以消除波形信號的相關(guān)性,從而降低語音信號表達的比特率。
Speech coding is a key technique in 3g and will play a very important role in data compression because of its strong ability of reducing the bit - rates of speech signals 其中的語音編碼技術(shù)可大幅度降低語音信號的傳輸速率,是第三代移動通信非常重要的支撐技術(shù)。
Based on those process algorithms , the other important applications , such as speech coding in gsm system , echo cancellation , speaker recognition , are discussed 在此基礎(chǔ)上,對gsm系統(tǒng)中的編碼、回聲抵消、說話人識別和交通車輛內(nèi)部的噪聲抵消應(yīng)用進行了研究。
In section one , we give a brief introduction of the history of speech coding , and then educe the topic of this thesis : itu - t g . 729 protocol 本文在第一章首先對語音壓縮編碼技術(shù)的發(fā)展及現(xiàn)狀作了簡明的分析,并由此引出了本文的主題: itu - tg 729語音壓縮編碼協(xié)議。
Computer simulation and subject listening test show that the algorithm of this paper can efficiently improve the quality of reconstructed speech of 2 . 4kb / s help speech coding 計算機仿真及主觀試聽結(jié)果表明,本文提出的這些改進方案有效地改善了2 . 4kb shelp語音編碼的語音質(zhì)量。
Pitch detection is one of the most important tasks in low - rate speech coding field . the accuracy of pitch detection will affect the performance of the whole codec 基音檢測是低速率語音編碼領(lǐng)域的一個非常重要的問題,準確檢測語音信號的基音周期非常關(guān)鍵,它直接影響到整個聲碼器的性能。
Many research institutes around the world are focusing on and developing wi speech coding algorithm , expecting to give a communication quality of synthesized speech at 2kb / s or even below 目前國際上許多研究機構(gòu)正在集中研究和開發(fā)該算法,期望在2kb / s或更低速率產(chǎn)生通信質(zhì)量的重建語音。
From these schemes it can be seen that matching pursuit based sinusoidal modeling has great potential in low bit rate speech coding , and provides a new way to study this problem 結(jié)果發(fā)現(xiàn)匹配跟蹤正弦建模在低位率語音編碼上具有很大潛力,為低位率高質(zhì)量語音編碼探索了一條新的技術(shù)路線。
Finally , this paper discussed the software system design based on above hardware platform , including the dsp initialization program , the interrupt request service and speech coding 最后討論了基于上述硬件系統(tǒng)的軟件設(shè)計,主要分為三個部分: dsp的初始化程序、中斷服務(wù)程序和語音編解碼程序。
Digital speech ' s store is also an important field that requires high quality speech coding algorithm because now all kinds of portable digital recorder is more and more popular 另外在語音存儲領(lǐng)域,近年來隨著各種便攜數(shù)碼錄音裝置的流行,對高合成語音質(zhì)量的語音編碼算法也提出了迫切的要求。
Speech coding is an application of data compression of digital audio signals containing speech. Speech coding uses speech-specific parameter estimation using audio signal processing techniques to model the speech signal, combined with generic data compression algorithms to represent the resulting modeled parameters in a compact bitstream.