Then it introduces some classical arithmetic of audio information hiding, such as Least Significant Bit, Phase Coding, Echo hiding. And we use them in our system to realize covert communication.
然后介绍了几种经典的音频信息隐藏算法，如最不重要位，相位编码和回声编码，并且将它们用在我们这套系统中实现了隐秘通信。
Combined with perceptual audio coding technology, digital audio water-marking technology embeds watermark data into audio signals.
数字音频水印技术和感知音频编码技术相结合，在音频信号中嵌入水印数据。
Corrigendum 1 - Information technology - - Coding of audio - visual objects — Part 4: Conformance testing.
勘误表1 - - -信息技术- - -视听对象的编码- - -第4部分：符合性试验。
Perceptual audio coding is the mainstream technology for the storage and trans-mission of audio signals.
感知音频编码是音频信号存储和传输的主流技术。
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 method and a device for audio coding are disclosed.
本发明揭示一种用于声频编码之方法及装置。
Corrigendum 6 - Information technology - - Coding of audio visual objects — Part 4: Conformance testing.
勘误表6 - - -信息技术- - -音视频对象编码- - -第4部分：符合性试验。
Because of considering the temporal masking effects to set up a threshold and the valid hop size of transient points, this method is very suitable for perceptual audio coding.
由于考虑了时域掩蔽效应来设置检测门限和有效瞬态点间隔，非常适用于感觉音频编码。
Secondly, introduces MP3 audio compress standard including subband filter bank, psychoacoustic model, adaptive window switch over, Huffman coding, bit reservior, etc.
其次，介绍了MP3音频压缩标准所使用的子带编码、心里声学模型、自适应窗口切换、哈夫曼编码、比特池等关键技术。
Then the spatial audio parameter ILD(Interaural Level Difference)is used to reconstruct the spatial sound field for each listener based on the theory of spatial audio object coding.
首先，根据虚拟会议的特点给出了合成会议音频的方法；然后，根据空间音频对象编码的原理，使用空间音频参数双耳声级差针对每个听者重建其空间声场。
To achieve fine imperceptible characteristic, the audio model in widely used audio coding theory is introduced into the audio data hiding research.
为了达到隐藏后信号良好的听觉不可感知性，引入了音频编码理论中广泛使用的听觉模型用于音频数据隐藏研究。
And the matrix coding help to reduce the proportion of the original audio changes, thereby reducing the effects of the original audio carrier 'imperceptibility when embeded datas.
并且矩阵编码有助于减小对原始音频的修改比例，进而减小嵌入数据对原始音频载体不可感知性的影响。
However, the audio coding technology for ultra wideband mostly USES perceptual coding which is based on the psychoacoustic model.
而带宽范围较宽的音频编码采用的则多是基于心理声学的感知编码技术。
By analyzing human physiological audio system and its masking effect, this paper illustrates the psychoacoustic model in audio part of the ISO video coding standard MPEG1.
介绍了人耳生理系统和掩蔽效应的特性，并阐述了视音频压缩标准MPEG1音频部分的心理声学模型。
Recently, it began to be applied in low - bit rate audio coding.
近年来。在低码率的音频编码算法中也开始应用它。
The audio frequency file is built by the method of modeling and coding.
音频文件的产生通过建模和编码的方法实现。
In perceptual audio coding with low bit rate application, the pre-echo artifact is more distinct, and the effective detection of transient signals is the precondition.
在低比特率音频感觉编码中，预回声失真更为突出，而对其处理的前提是瞬态信号的有效检测。
Simultaneous masking which is an important research content of psychoacoustic, have a wide range of applications in audio coding, speech enhancement and so on.
同时掩蔽是心理声学的重要研究内容，在音频压缩编码、语音增强等方面有着广泛的应用。
A real-time embedded design of MPEG-4 visual simple profile and advanced audio coding decoder using Digital Signal Processor and ARM9 core are presented in this paper.
文中提出应用数字信号处理器和微控制处理器ARM9核的MPEG-4视频简易框架和高级音频编码解码器的实时嵌入式设计。
We also studied coding and compress technique of audio signal, which is used in compressing and far-distance transmission of audio signal in our broadcast system.
本文研究了音频信号编码和压缩技术，用于本系统广播音频信号的压缩和远程传输。
Lossless audio coding was widely used in the processing of audio signal.
在语音信号处理的许多应用中，采用了无损音频压缩的方法。
MPEG-4 standards are described in brief. Based on this, audio object coding and video object coding are emphasized.
简要介绍了MPEG - 4标准的主要内容在此基础上着重介绍了音频对象的编码和视频对象的编码。
As many low delay high efficient perceptual audio coding algorithms, a newly designed audio coding algorithm - LDX is introduced in the thesis.
本文介绍了一种新的音频编码算法-LDX，它是一种高效低延时的感知音频编码方法。
This paper introduces some kinds of audio coding method, gives the comparison among them, and shows their applications.
文中介绍了几种常用的多通道压缩音频编码方式的原理，并比较了它们的异同、压缩码率以及实际中的应用。
As the general coding of moving pictures and audio information, MPEG-2 is used in wide scope.
作为运动图像伴音信息的通用编码，MPEG - 2得到了广泛的应用。
1 - Information technology - - Coding of audio - visual objects — Part 4: Conformance testing.
勘误表1 - - -信息技术- - -视听对象的编码- - -第4部分：符合性试验。
6 - Information technology - - Coding of audio visual objects — Part 4: Conformance testing.
勘误表6 - - -信息技术- - -音视频对象编码- - -第4部分：符合性试验。
It encodes speech or other audio signals in frames using linear predictive analysis-by-synthesis coding.
它使用线性综合分析预测编码在侦中编译语音或其他音频信号。
And the new patent licensing policy introduced by MPEG-4 is considered to be too harsh and unacceptable. Many such reasons urgently need a new audio video coding standard to be introduced.
而MPEG - 4出台的新专利许可政策被认为过于苛刻无法接受，诸多此类原因都迫切需要一种新的视频编码标准出台。
And the new patent licensing policy introduced by MPEG-4 is considered to be too harsh and unacceptable. Many such reasons urgently need a new audio video coding standard to be introduced.
而MPEG - 4出台的新专利许可政策被认为过于苛刻无法接受，诸多此类原因都迫切需要一种新的视频编码标准出台。
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