webcast encoder

From: http://broadcastengineering.com/mag/broadcasting_dolby_pro_logic/ In the same way that digital technology has replaced analog, surround sound is replacing stereo. phenomenal sales of DVD-video players and home theater systems confirm that consumers enjoy sound from all around. savvy broadcasters understand that they must some how squeeze 5.1 channels through their 2-channel audio signal paths. While matrix surround systems suchDolby Pro Logic II (dplii)AndSRS circle surrou

of other Speech Encoding algorithms. 2. g.722.1: low-complexity coding at 24 and 32 kbit/s for hands-free operation in systems with low frame loss Encoding type: Transform the domain Audio CodingEncoding rate: 24 kbps and 32 Kbps (in fact, more bit rates can be achieved, with an increase of 8 kbps, and a higher bit rate version with 32 KHz sampling ); Theoretical latency: 40 ms (20 ms frame size + 20 ms lookhead) Sound Quality: audio algorithms such as MP3 and WMA are better at low bit rates.

% (especially on high bitrates ). cabac (as cavlc) is a lossless method and therefore will never hurt the quality, but will slow down encoding and decoding. Loop/deblocking filter:In contrary to prefiltering (for example via avisynth, done on the input), or postprocessing/filtering (via the decoder, done on the final output ), loopfiltering is applied during the Encoding Process on every single frame, after it got encoded, but before it gets used as reference for the following frames. this helps

Reprint Please specify Source: http://blog.csdn.net/zhaokaiqiang1992The first two articles describe the principles of sonic verification/communication and the implementation of sound playback, which will be the most important. is also the most difficult thing to understand, is how the sinvoice of these numbers are encoded transmission.Due to the addition of a large number of hard-to-distinguish callback functions in the source code. For the sake of reading convenience, I did part of the renaming

analysis and design, and C language does not directly support the object-oriented syntax, c to imitate C + + is not necessary, when considering the use of C language to build large projects, the use of object-oriented design, and appropriate construction C syntax support such design ideas are needed.3.FFMPEG Architecture AnalysisFFmpeg is currently the most widely used codec software library, supporting a variety of popular codecs, it is implemented in C language, not only is integrated into a

AAC English is all called Advanced Audio Coding, Chinese meaning is the advance audio encoding. As compared with the current popular MP3 audio format, with more audio track channel support, higher sampling rate and sampling accuracy, while the compatibility of multiple languages, higher decoding efficiency, has gradually become the successor of the MP3 format bar. In general, AAC can provide better sound quality when comparing MP3 files by a 30% reduction. There are currently three types of AAC

extracts the byte array and converts it to a character array. When you are finished, you can output the character array to the console.3. Writing dataThe process of writing data to a random access file is very similar to reading data from it. You first need to create a byte array, and the simplest way is to first build an array of characters to write to the file. It then uses the Encoder object to convert it to a byte array, which is very similar to

desired image; 3.after the plotting is completed, the JPEG encoder of com.sun.image.codec.jpeg package is used to encode the image; 4. Finally, output the encoded data to httpresponse. The embedded com.sun.image.codec.jpeg package is located in the Rt. jar package in the JDK directory. It is not a public API and you need to copy Rt. jar to the WEB-INF/lib of the Web application. First, create the simplest servlet: Public class createimagese

Please indicate the source for reprinting ~ Link: http://blog.csdn.net/zgyulongfei/article/details/7680956 I am disheartened when I encounter such an error in the android live video system. This is the case. h. 264 hard coding is used for video collection. Because all the code is written in a file, it is messy and difficult to maintain, so I decided to refactor it, extract the encoding part separately to form an encoder. If H is used later. 264 encodi

. Semi-supervised learning is of great practical significance for reducing labeling cost and improving learning machine performance. > Today, let's talk about unsupervised machine learning: The process of cluster analysis can be broadly divided into four steps, as shown in. First, the data set needs to be preprocessed, usually including data dimensionality reduction, feature selection or extraction, and so on; The second step is to design or select the clustering algorithm according to the