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。
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。
Premised on assurance of speech quality, digital speech coding can reduce rate of bits, for the purpose of increasing use of finite bandwidth.
数字语音压缩的目的是在保证语音一定质量的前提下尽可能降低其编码比特率，提高有限传输带宽的利用率。
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。
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。
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。
This paper proposed a pitch quantization method for low bit-rate speech coding systems.
本文提出了一种适用于低速率语音编码系统的基音周期量化算法。
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。
The accurate description of track model and excitation model is the key of the Medium-low rate speech coding.
如何准确的建立声道模型和激励模型成为中低速语音编码的关键。
An improved method is presented on the base of the study for the discrete-amplitude multi-resolution speech coding.
在对离散幅度多分辨率语音编码方案研究的基础上提出了改进算法。
The optimization method proposed in this paper is valuable to the DSP implementation of other speech coding standards.
该优化设计方法对其它语音编解码标准的DSP实现具有较大的参考价值。
Four traditional wideband speech coding standards and three new embedded wideband speech coding standards are introduced.
文章介绍了四种传统宽带语音编码标准和三种最新的嵌入式宽带语音编码标准。
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。
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。
Experiments show that high quality speech coding systems can be realized by utilizing the characteristics of speech signals.
实验表明，利用语音信号本身特征，达到高压缩比同时具有较高合成语音质量是可能的。
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。
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。
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。
For very low bit rate speech coding algorithms, it is important to quantize these parameters accurately using as few bits as possible.
甚低位率语音编码算法要求使用尽可能少的位率编码语音谱参数。
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。
Presented in this paper is a new signal processing method which is based on a nonlinear local prediction model (NLLP) and applied to speech coding.
提出了一种新的基于非线性局部预测模式(NLLP)的信号处理方法，并将其应用于话音编码中。
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。
In this paper, a new adaptive delta modulation (ADM) method, hybrid companding delta modulation with algorithm (AHDM), is proposed for speech coding.
本文提出了一种新的自适应增量调制（ADM）话音编码方案——加性混合压扩增量调制（AHDM）。
The speech coding algorithm, the hardware architecture and work flow of the vocoder system, software implementation and code optimization are introduced.
介绍了语音编解码算法原理、声码器系统的硬件结构、工作流程以及软件实现与代码优化。
An error resilience scheme for very low bit rate speech coding was developed for speech communications on narrow band channels with high bit error rates.
为满足在高误码率的窄带信道上进行语音通信的需求，研究了一种适用于甚低速率语音通信的抗误码参数估值算法。
And medium-low rate speech coding methods have advantages and flaws in describing excitation, and can't describe all kinds of speech excitation perfectly.
另一方面，在中低速语音编码方法中，各种激励各有所长，但都不能很好的描述所有类型的语音激励。
In the research of mixed excitation linear prediction speech coding, a new real-time normalized correlation function pitch detection algorithm is proposed.
在混合激励线性预测低速率语音编码研究中，提出了一种新的归一化自相关函数实时基音检测算法。
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。
Based on speech transformation and representation using adaptive interpolation of weighted spectrum (STRAIGHT), a wideband speech coding algorithm is presented.
提出了一种基于自适应加权谱内插(STRAIGHT)的宽带语音编码算法。
In this paper, developments of speech compression coding are briefly introduced, and importance is attached to recent advances in speech coding at low bit rates.
本文简要介绍了语音压缩编码的新进展，并且着重介绍低码率语音编码在新近几年所取得的进展。
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