Description: 关于H.264音频和视频的编解码技术的详细介绍，以及源码，对学习H.264压缩技术的人会很有帮助。-On the H.264 audio and video codec technology for detail, and the source code to the study of H.264 compression technology will be helpful. Platform: |
Size: 829440 |
Author:王慧 |
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Description: 网络电话系统源码，可以学习网络传输，音视频采集压缩等编程技术-Internet telephone system source code, can learn network transmission, audio and video capture and compression, and other programming techniques Platform: |
Size: 6118400 |
Author:hurtman |
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Description: 本实验采用vfw完成视频捕获，通过MCI接口完成音频的采集，使用jpeg编码完成压缩解压缩过程，采用udp方式实现音视频的传输，-In this study, completed by vfw video capture, through the MCI interface to complete the audio of the collection, use jpeg compression and decompression code to complete the process, be achieved using udp audio and video transmission, Platform: |
Size: 1760256 |
Author:刘常云 |
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Description: IPP“Intel Integrated Performance Primitives” （ Intel IPP ）是一套跨平台的软件函数库，他提供了广泛的多媒体功能：音频解码器（例如： H263 、 MPEG-4 ）、图像处理 (JPEG) 、信号处理、语音压缩（例如： G723 、 GSM 、 AMR ）和加密机制。“Intel IPP” 包含各种的函数，用于进行向量与图像处理、颜色转换、过滤、分屏、设置域值、变换，以及算术、统计、几何与图形运算。对于每个函数， “Intel IPP” 均支持多种数据类型和分布，同时保持了数据结构的最小化，它提供了丰富的选项供用户在设计与优化应用程序时选用，不必再去编写特定代码。-IPP "Intel Integrated Performance Primitives" (Intel IPP) is a cross-platform software library, he
Offers a wide range of multimedia features: audio decoder (for example: H263, MPEG-4), image processing (JPEG), signal processing,
Voice compression (for example: G723, GSM, AMR) and encryption mechanisms. "Intel IPP" contains a variety of functions, used for the
Volume and image processing, color conversion, filtering, split-screen, set the field value, transform, and mathematics, statistics, geometry and graphics operations. For each
A function, "Intel IPP" are supported by multiple data types and distribution, while maintaining a minimal data structure, which provides a wealth of
Options for users in the design and optimization of applications to choose from, do not have to go write specific code.
IPP "Intel Integrated Performance Primitives" (Intel IPP) is a cross-platform software library, he
Offers a wide range of multimedia features: audio decoder (for example: H263, MPEG- Platform: |
Size: 9216 |
Author:ajax |
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Description: G729、h263、h264、MPEG4四种最流行的音频和视频标准的压缩和解压算法的源代码-G729, h263, h264, MPEG4 four kinds of the most popular audio and video standard compression and decompression algorithm source code Platform: |
Size: 1454080 |
Author:偈 |
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Description: 调用RealPlayer播放音频程序源码。rm、rmvb是real公司专用音、视频格式，其特点是压缩率高，所以在互联网上有广泛应用-Call RealPlayer to play the audio program source code. rm, rmvb real company dedicated audio and video formats, which is characterized by high compression rate, so widely used on the Internet Platform: |
Size: 33792 |
Author:王立 |
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Description: 该源码是mp3压缩的 经过修改后 可以支持各种不同音频格式的编码，分为两部分源码，一部分是编码，另一部分则是相应的解码程序-The source code is mp3 compression has been modified and can support various audio encoding format, the source code is divided into two parts, part of the coding, the other part is appropriate decoding procedure Platform: |
Size: 389120 |
Author:暗藏 |
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Description: Audio Codec(ADPCM 1-Bit)
The code is ready for Altera Cyclone-II DE1 Starter board and it is tested, you can modify codes and use them in any project.
Core Description:
Sampling Frequency: 44100Hz
Channels: Stereo
Bit-rate: 1 Bit Per Sample(So it is: 44.1 * 2 = 88.2kbps)
Compression Ratio: 16:1 Platform: |
Size: 6482944 |
Author:Siva Sankar Garika |
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Description: pcm编码们以话音信号为例来说明数字通信的基本原理。人类的语音信号的频率范围在300—3 400 Hz之间，留有一定余地，设话音信号最高频率为4 kHz，则根据奈奎斯特采样定理，将话音信号数字化所需要的采样频率为8 kHz，即采样周期为l25 US 0再把每个采样值用8位二进制数字编码，就把模拟话音信号转换成了数字信号。因此，一路话音信号转换成数字信号以后，比特率为8 x8 000 b／s：64 kb／s。将模拟信号用脉冲信号进行采样使其离散化并进行数字编码的过程称为脉冲编码调制，简称PCM，这是将模拟话音信号转换成数字信号的基本方法。
-PCM stands for Pulse Code Modulation. PCM technology is a means by which standard audio signals (which are represented by waveforms) are converted to digital audio signals (which are represented by 1 s and 0 s- much like computer data) with little, or no, compression. The method of audio conversion is used on most digital audio formats, including C Platform: |
Size: 16384 |
Author:lee |
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Description: LDPC码的完整的编译码，线性调频脉冲压缩的Matlab程序,可以得到很精确的幅值、频率、相位估计，模式识别中的bayes判别分析算法，已调制信号计算其普相关密度，本科毕设要求参见标准测试模型，重要参数的提取，实现了对10个数字音的识别程。- Complete codec LDPC code, LFM pulse compression of the Matlab program, You can get a very accurate amplitude, frequency, phase estimation, Pattern Recognition bayes discriminant analysis algorithm, Modulated signals to calculate its density Pu-related, Undergraduate complete set requirements refer to the standard test models, Extract important parameters, Realization of 10 digital audio recognition progra. Platform: |
Size: 6144 |
Author:sijuwgrv |
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Description: 基于Huffman树的压缩文件及解压文件源代码，可压缩txt,图片，音频等，但txt格式压缩率较高，其他格式压缩不明显(Huffman tree based compressed files and decompression file source code, compressed TXT, pictures, audio, etc., but TXT format compression rate is higher, other formats are not obvious compression) Platform: |
Size: 1697792 |
Author:岚爻
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Description: 详细讲解了25个MATLAB图像与视频处理实用案例（含可运行程序），涉及雾霾去噪、答题卡自动阅卷、肺部图像分割、小波数字水印、图像检索、人脸二维码识别、车牌定位及识别、霍夫曼图像压缩、手写数字识别、英文字符文本识别、眼前节组织提取、全景图像拼接、小波图像融合、基于语音识别的音频信号模拟灯控、路面裂缝检测识别、视频运动估计追踪、Simulink图像处理等多项重要技术(Explain in detail the 25 MATLAB image and video processing utility case (including operating procedures), involving haze denoising, sheet automatic marking, lung image segmentation, wavelet digital watermarking, image retrieval, face recognition, license plate location and two-dimensional code recognition, image compression, Hoffman handwritten digit recognition, character recognition, text English anterior segment tissue extraction, panoramic image mosaic, image fusion, light control, analog audio signal of speech recognition pavement crack detection and identification, video tracking, motion estimation of Simulink image processing technology based on a number of important) Platform: |
Size: 1324032 |
Author:糖糖的小糖
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Description: speex音频编解码，压缩比和压缩质量都很好，该工程内包含所有speex音频编解码的源码，可以调试，编译，修改。(Speex audio codec, compression ratio and compression quality are very good, the project contains all the Speex audio codec source code, you can debug, compile, modify.) Platform: |
Size: 1015808 |
Author:Ahu_Lay
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Description: H.265是ITU-T VCEG 继H.264之后所制定的新的视频编码标准。H.265标准围绕着现有的视频编码标准H.264，保留原来的某些技术，同时对一些相关的技术加以改进。新技术使用先进的技术用以改善码流、编码质量、延时和算法复杂度之间的关系，达到最优化设置。具体的研究内容包括：提高压缩效率、提高鲁棒性和错误恢复能力、减少实时的时延、减少信道获取时间和随机接入时延、降低复杂度等。H264由于算法优化，可以低于1Mbps的速度实现标清数字图像传送；H265则可以实现利用1~2Mbps的传输速度传送720P（分辨率1280*720）普通高清音视频传送。(H.265 is a new video coding standard developed by ITU-T VCEG after H.264. H.265 standard revolves around the existing video coding standard H.264. The new technology uses advanced technology to improve the relationship between code stream, coding quality, delay and algorithm complexity. The specific research contents include: improving compression efficiency, improving robustness and error recovery ability, reducing real-time delay, reducing channel acquisition time and random access delay. Because of the optimization of the algorithm, H264 can realize the standard digital image transmission at a speed of less than 1Mbps. H265 can transmit 720P (resolution 1280g 720) HD audio and video transmission at 1mbps.) Platform: |
Size: 1330176 |
Author:DaisyK
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Description: H.265是ITU-T VCEG 继H.264之后所制定的新的视频编码标准。H.265标准围绕着现有的视频编码标准H.264，保留原来的某些技术，同时对一些相关的技术加以改进。新技术使用先进的技术用以改善码流、编码质量、延时和算法复杂度之间的关系，达到最优化设置。具体的研究内容包括：提高压缩效率、提高鲁棒性和错误恢复能力、减少实时的时延、减少信道获取时间和随机接入时延、降低复杂度等。H264由于算法优化，可以低于1Mbps的速度实现标清数字图像传送；H265则可以实现利用1~2Mbps的传输速度传送720P（分辨率1280*720）普通高清音视频传送。(H.265 is a new video coding standard developed by ITU-T VCEG after H.264. H.265 standard revolves around the existing video coding standard H.264. The new technology uses advanced technology to improve the relationship between code stream, coding quality, delay and algorithm complexity. The specific research contents include: improving compression efficiency, improving robustness and error recovery ability, reducing real-time delay, reducing channel acquisition time and random access delay. Because of the optimization of the algorithm, H264 can realize the standard digital image transmission at a speed of less than 1Mbps. H265 can transmit 720P (resolution 1280g 720) HD audio and video transmission at 1mbps.) Platform: |
Size: 16252928 |
Author:DaisyK
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Search - audio compression code