音频压缩

一种基于Mp3框架的低采样率音频压缩方案

A Scheme of Low-frequency Sampled Audio Compression Based on Mp3 Frame

基于G.723.1的DSP音频压缩系统

DSP Audio Compression System Based on G.723.1

MPEG-4音频压缩技术的新进展&ALS

The New Development of Audio Compress Technology in MPEG-4 ALS

基于小波包分解算法的MPEG-4音频压缩编码的改进与实现

The Development of MPEG-4 Audio Coding System Based on Wavelet Packet Decomposing Algorithm

MP3是当前最流行的音频压缩文件格式。

MP3 is the most popular digital audio format .

MPEG-4无损音频压缩算法改进

Improvement on MPEG-4 Lossless Audio Coding Algorithm

本文论述了一个基于MPEG-4视频压缩算法、MP3音频压缩以及RTP网络组播的多媒体传输系统。

A Multimedia transmission System based on MP3 , MPEG-4 and RTP is introduced in the article .

虽然MPEG通常与视频和音频压缩联系在一起，但是MPEG-4标准还包含许多其他元素（流）

Even though MPEG is typically associated with video and audio compression , the MPEG-4 standard encompasses many more elements ( streams )

随着数字音频压缩技术的成熟，以MP3为代表的音乐制品在网络上广泛传播，数字音频水印技术也随之发展起来。

As digital audio compression technique is more and more mature , music products like mp3 is widely spread on the internet .

与MP3音频压缩、低通滤波等常规的音频信号处理攻击相比，同步攻击更加难以抵抗，已经成为研究界的一个公开难题。

Compared with common audio signal processing attacks such as MP3 compression , low-pass filtering etc. , they are more difficult to manage .

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。

Secondly , introduces MP3 audio compress standard including subband filter bank , psychoacoustic model , adaptive window switch over , Huffman coding , bit reservior , etc.

本论文对以MPEGAAC、DolbyAC-3、DTS为代表的多通道音频压缩编解码技术进行了研究。

728 . Secondly , the representative techniques of multi-channel audio codec , including MPEG AAC , Dolby AC-3 and DTS etc.

AC-3数字音频压缩中的变换编码算法

Transform Coding Algorithm of AC-3 Digital Audio Compression

本设计也可实现和另一Android平台间的音视频即时通信，采用优化过的视频数据压缩算法和音频压缩算法提高传输和回放质量。

The design can also do audio and video real-time communication directly with another Android platform , using optimized video data compression algorithm and audio compression algorithms to improve transmission and playback quality .

提出一个具有实时性能的改进型DCT算法，并将改进型DCT与混合滤波器组相结合，给出了一个高质量音频压缩算法。实时数据库平台是实现电厂管控一体化的桥梁。

An enhanced DCT algorithm with real time characteristics is put forward ; and a coding algorithm of high quality is obtained by combining the enhanced DCT and a hybrid filter bank .

运动视频和音频压缩标准MPEG的概述及其视频压缩算法描述，音频压缩的编码和解码。

The MPEG standard for moving video and audio compression as well as the video compress algorithm , and the encoding and the decoding of audio compression is described .

本文讨论了基于数字信号处理器（DSP）的MP3实时编码器系统方案，主要的研究内容包括MP3编码器系统方案的选择、音频压缩算法和MP3实时编码器系统方案的设计。

This thesis discussed a scheme of MP3 real-time coder system . Main works include the selection of MP3 coder scheme , audio compression algorithm and the design of MP3 real-time coder scheme .

Internet网络传输和处理能力的大幅提高，使得网上应用业务越来越多，特别是视音频压缩技术的发展和成熟，使得网上视音频业务成为Internet网上最重要的业务之一。

Internet network transmission and processing capabilities increase substantially , so the business of web-based applications get more and more . Particularly video and audio compression technology develops and matures , which makes online video and audio business become one of the most important business of the internet .

本文从音频压缩理论的角度，阐述MP3音频格式、压缩编码原理，同时介绍专业制作MP3的方法。

From the perspective of Audio Compression Theory , the paper discusses format of audio Frequency technique ( MP3 ) and compression coding principle and also introduces the facture of audio Frequency technique ( MP3 ) .

本论文主要研究开源音频压缩算法OggVorbis的编解码原理。

In this paper , I mainly developed the theory of open-source Ogg Vorbis audio technique including its coding and decoding procedure .

26x和MPEG-x都是应用最广泛的视音频压缩国际标准。

26x and MPEG-x are two of the more widely used audio / video international standards .

数字音频压缩标准AC-3算法已在广泛领域得到应用，如DVD，HDTV等，是发展家庭影院的主要技术之一。

Digital audio compression standard AC-3 algorithm has been widely utilized in various fields , such as DVD and HDTV , and is regarded as one or the key techniques for home theatre .

首先，通过与其它几种常用压缩算法的比较，阐述了MPEG编码算法在音频压缩位率和质量上的优点，并详细分析了MPEG音频编码算法的国际标准。

This thesis consists of the following contents : First , the differences of the MPEG coding and some generally audio coding algorithms are compared , and the MPEG coding plays better than others in rate and quality .

通过阅读大量国内外有关VOD技术的文献，本文对视音频压缩技术，视频传输技术及相关协议进行了介绍和分析。

Through the reading of a great deal of the domestic and oversea literature of VOD technology , we introduce and analyze the technology of video and audio encoding , the technology of video / audio transmission and some protocols related .

324通过定义系统互连方案、视频和音频压缩方法、信号混合传输方法以及电话线上信号的格式，为在PSTN进行可视通信的终端设备制定了国际标准。

It specifies the system structure , video and audio frequency compression , mixed signal transmission and phone line signal format of a terminal system , so that through the system the video communication can be undertaken on PSTN .

该系统是集成无线局域网接口、条码扫描接口、视音频压缩传输、显示驱动、嵌入式操作系统、交互式电子技术手册、用户认证与通信加密等功能的瘦客户PMA体系。

The system is the thin client PMA system which integrated functions such as wireless network , barcode scanners , video compression / transport , display drivers , embedded OS , IETM , user authentication and communication encrypting .

在众多压缩标准中，MP3压缩格式以其优越的性能以及品质与算法复杂度的极佳折中，已成为当前PC，网络，便携式娱乐设备最为流行的音频压缩标准。

Among the many compression standards , MP3 compressed format has become a very popular standard in the PC , network , portable entertainment devices and so on , because of its superior quality , excellent compromise of the algorithm performance and complexity.MP3 decoding technology is now very mature .

多通道音频压缩编解码算法及定点化：AC-3的5.1通路虚拟环绕声系统实现。

The research on the multi-channel audio codec and the fixed-point implementation methods ; 3 . The system design of the virtual reproduction of AC-3 5.1 channel surround sound by loudspeaker .

本文先阐述了MPEG-1视频、音频压缩编码的技术原理，探讨了MPEG-1数据流的格式以及光盘播放系统的纠错技术；

Firstly , the thesis expounds the compressing and encoding technology of the video & audio in MPEG-1 standard , and discusses the format of MPEG-1 data , and the way of error-rectifying on digital disc playing system .

同时，针对系统中涉及到的音频压缩算法、混音算法、RTP／RTCP网络传输协议、组播技术、NAT穿透技术、网络安全等方面的技术进行了理论分析和应用设计。

Meanwhile , the author has made a deeply theory study and application design in speech encoding , audio mix arithmetic , RTP / RTCP protocol , multicast technology , NAT passing through technology , network security and so on , which are referred to in the system .