They include patents on wireless data, speech coding, security, and encryption, according to Nokia.
按诺基亚的说法，它们包括无线数据、语音编码、安全和加密方面专利。
Speech coding plays a significant role in solving these issues.
语音编码在解决这些问题中担当着重要的角色。
First, the algorithm is used to design the codebook of the speech coding parameters.
首先，采用改进的模拟退火算法设计语音编码参数矢量量化码本。
The paper investigates the capability of extension of characteristic waveform interpolation (CWI) algorithm to wideband speech coding.
考察了特征波形内插(CWI)算法对于宽带语音编码的扩展能力。
This paper analyzes the limitation of fixed gain quantization in G. 728 speech coding algorithm and proposes an adaptive quantization scheme with exact gain.
本文分析了G . 728语音编码算法增益固定量化的缺陷，设计了精确表示增益的自适应量化方案。
A kind of robust pitch estimation algorithm is presented for parametric speech coding with transparent quality at very low bit rate.
为了实现甚低码率下的透明质量语音编码，提出了一种基音周期估计算法。
In the environment of speech coding application, especially in military applications, the vocoders quality in noisy environment needs to be improved.
在语音编码的应用环境中，特别是在军事应用中，强噪声环境下声码器性能的改进是一个亟待解决的问题。
Algorithms and new research results in very low bit rate speech coding is presented thoroughly in this paper, and conclusions are given through comparison and analysis.
全面论述了极低速率语音编码算法中运用的方法理论及最新的研究成果，并对这些算法进行了比较和分析，得出结论。
We utilize GAs to search stimulative code word in CELP when we have had the knowledge of speech signal coding and GAs.
在具备了语音信号编码和遗传算法的基本知识后，将遗传算法运用于CELP的码字搜索。
Chinese speech waveform coding synthesis is based on the time domain pitch synchronous overlap add(PSOLA)method and a Chinese syllable dictionary.
以时域基音同步叠加（PSOLA）技术和一个全汉语单音节库为合成单元进行汉语语音波形编码合成。
At present, MPEG2 has become the most prevalent coding technique, which is mainly used for the transmission of speech data and viewdata.
MPEG2是目前应用最广泛的一种编码技术，主要用于语音，图像数据传输。
The proposed invention offers a low-complexity, intermediate quality HFR method useful in speech and natural audio coding applications.
本发明提供一种可应用于语音和自然音频编码的低复杂性，中级质量HFR方法。
A function named CAMDF is proposed as well as the CAMDF-based algorithms for speech classification and pitch estimation. The algorithms are used for the coding schemes in this thesis.
提出了CAMDF函数，以及基于CAMDF的语音分类与基音估计算法，并在本文的压缩编码方案中得以运用。
Sinusoid modeling has proven to be an efficient technique in speech coding.
正弦波模型已被证明是一种行之有效的语音信号编码技术。
With the rapid development of communication technique, the speech coding is gradually updating from narrow band to wideband.
随着通信技术的飞速发展，语音编码技术也逐渐从窄带过渡到宽带。
The weighted LPCC feature based on the distortion of speech coding was explored to reduce the influence under the matched condition.
在前者中，通过分析语音编码对LPCC参数的影响，提出了一种基于编码失真的LPCC加权参数。
Segment vocoder is an efficient very low bit rate speech coding algorithm. Speech segment method, one of the key technology of segment vocoder, is studied and a new algorithm is presented.
分段声码器是一种高效的低速语音编码方法，针对分段声码器实现的关键技术语音分段方法进行了研究，提出了一种分段新算法。
In the digital processing of speech signals, speech coding technique is most important.
在语音信号数字处理过程中，语音编码技术是至关重要的。
A speech coding method called bit expansion subband coding (BESBC) is presented in this paper.
本文提出了一种称为比特扩展子带编码(BESBC)的语音编码方法。
With the continuously increasing of the demand of high quality of speech in telecommunication field, the technology of speech coding has been rapidly developed recently.
由于语音通信领域对高质量语音需求日益增加，语音编码技术也在近年来得到了飞速发展。
A frequency domain technique is presented to be used in speech coding to improve the performance of low order linear prediction (LP) in modeling of formants of voiced speech.
讨论了一个用于语音编码的频域技术，用以在浊音语音共振峰模型方面改善低阶数线性预测(LP)的性能。
While wideband speech coding technology improves the speech intelligibility and naturalness, telecommunication systems have to be modified.
宽带语音编码技术虽然提高了语音质量，但是也提高了对通信系统的要求。
One of main services in mobile communication is speech and the key technology is the coding and decoding of speech signal.
语音业务一直是移动通信中的主要业务之一，其中最关键的技术就是语音信号的编码与解码。
The paper falls into two main parts : digital speech compress coding and moving picture compress coding .
本论文的工作分为两大部分：数字语音压缩编码和活动图像压缩编码。
Voice conversion is a new area of speech technology; the studies on it will promote the research of speech analysis, speech coding, speech synthesis, speech enhancement, speech recognition and so on.
说话人转换是语音信号处理领域的一个较新的分支，它的研究对语音分析，语音编码，语音合成，语音增强，语音识别等语音信号处理的其它各个领域有重要的促进作用。
In the study of MBE speech coding, a new efficient practical look-back and look-ahead pitch tracking smoothing algorithm is presented based on the dynamic programming approach.
在多带激励低速率语音编码研究中，本文依据动态规划技术原理，提出了一种有效而实用的前后各看一帧的双向基音跟踪平滑算法。
As one of the current most potential low bit rate speech coding schemes, waveform interpolation model with its high performance has been paid more and more attention.
波形内插语音编码模型作为当今最具潜力的低速率语音编码方案之一，因其良好的性能，越来越受到人们的重视。
Based on the speech research, a completely new waveform speech coding approach is presented called half wave speech coding.
在对语音实验分析的基础上，提出一种语音波形编码的新方法——半波编码。
The decomposition algorithm of the characteristic waveform interpolation(WI) speech coding is investigated. A novel WI speech coding algorithm based on pitch synchronization is proposed.
研究了在特征波形语音编码算法中的特征波形分解算法，提出了一种基于基音同步的特征波形内插语音编码算法。
The decomposition algorithm of the characteristic waveform interpolation(WI) speech coding is investigated. A novel WI speech coding algorithm based on pitch synchronization is proposed.
研究了在特征波形语音编码算法中的特征波形分解算法，提出了一种基于基音同步的特征波形内插语音编码算法。
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