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 www.compression-links.info: Find, download & compress! 
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| Audio area, Quantization area, MP3 area, NonCommercialProgs content, G.711_G.72x area | SPDemo is an assisting tool for teaching speech & audio processing techniques developed in SIPL. Using SPDemo one can select from a variety of speech & audio processing techniques and parameters in a straightforward and simple way. The results of this processing are shown both numerically and graphically, in order to ease the analysis of data. The purpose of SPDemo is to enable experiments with different audio & speech processing algorithms without actually implementing them. Free for educational purposes. Created: 05/02/2007 |
| MPEG area, Companies content, MPEG-4_AVC_H264 area, H.261_H.263 area, G.711_G.72x area | Salyens offers high-quality video codecs, including H.263, H.263+, H.264 (MPEG-4 AVC Part 10) and MPEG-4 Part 2, with a focus on standard compliant video conferencing and RTP streaming applications. These codecs are also integrated, along with several audio codecs such as AMR NB and G.7xx, into the Smeet SDK and SmeetX. Created: 30/01/2007 |
| CommercialLibs content, SourceCode content, G.711_G.72x area | Has free trial version download for Windows and Linux platform for G.722,G.723.1,G.729A,G.726,G.728. Support concurrent codec in single thread with a simple interface. The web page lists all prices for the binary codecs and the codec source code. The source code is written in C/C++ and can be used on other platforms. They also provide AEC/VAD/AGC source code. Created: 15/11/2006 by Hunter Lin |
| Speech area, MP3 area, CommercialLibs content, MPEG-4_AVC_H264 area, H.261_H.263 area, G.711_G.72x area |
SPIRIT offers a wide range of high-quality products, which include but are not limited to speech/audio/video codecs and data compression algorithms.
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| SourceCode content, G.711_G.72x area | This program implements the 16 kb/s Low-Delay CELP algorithm (ITU-T Recommendation G.728) using floating point. The input speech files should be 2-byte per sample and contain no header. The input can use the full 16 bit range. The bitstreams are written as 2-bytes per 10-bit codeword. This code was test on SUN and SGI platforms using the gcc and cc compilers. Created: 16/02/2006 by Maxim Smirnov |
| Papers content, G.711_G.72x area | The text has some charts on G.711, G.723.1, G.729A performance with increasing packet loss and increasing latency. Created: 30/01/2006 by Maxim Smirnov |
| CommercialProgs content, G.711_G.72x area | VOCAL Technologies sells quite a number of ITU-T speech codecs. The company has solutions for G.711, G.722.1, G723.1, G.726, G.727, G.728, G.729. Created: 30/01/2006 by Maxim Smirnov |
| Tutorials content, G.711_G.72x area | Short definition and description of G.729 -- Coding of speech at 8 kbit/s using conjugate-structure algebraic-code-excited linear-prediction (CS-ACELP). G.729 is mostly used in Voice over IP (VoIP) applications. Created: 30/01/2006 by Maxim Smirnov |
| Tutorials content, G.711_G.72x area | Short definition and explanation of G.711 -- Pulse Code Modulation (PCM) of Voice Frequencies on an 64 kbps channel. Created: 30/01/2006 by Maxim Smirnov |
| Tutorials content, G.711_G.72x area | Brief, but clear and plain overview of G.7xx protocols. Created: 30/01/2006 by Maxim Smirnov |
| Speech area, Standards content, G.711_G.72x area | This is a list of ITU-T Recommendations on "Transmission systems and media, digital systems and networks" (Series G). It contains an index for the G.7xx audio codecs family. One can check the status of documents, see their contents and buy them online. Created: 30/01/2006 by Maxim Smirnov |
| CommercialLibs content, G.711_G.72x area | The folks at Compandent have this to say about their product: Compandent's ComPacketer is a voice coder which achieves a breakthrough in quality/bit rate/complexity tradeoff. Compandent’s novel technology, the ComPacketer that operates at 2.8 kb/s, produces speech with quality which exceeds that of ITU-T G.723.1 at 6.3 kb/s. Using the ComPacketer, only graceful degradation is introduced in frame erasure environment, as compared to the higher quality degradation introduces by the common standards used for VoIP. Created: 07/03/2004 by Mark Nelson |
| Tutorials content, Speech area, Papers content, Links content, G.711_G.72x area | This site contains the comp.speech FAQ, and also has links to their ftp site, which contains software for speech codecs. Created: 21/11/1999 by Mark Nelson |
| Audio area, SourceCode content, NonCommercialLibs content, H.261_H.263 area, G.711_G.72x area |
This open source project aims to create a free H.323 stack. The project was started as a reaction to the high cost of commercial implementations of audio and video compression code implementing the various components of H.323. Roger H. adds There are now several useful applications which use the library
including OpenMCU (a reliable multi person conference server)
and GnomeMeeting (a GTK/Gnome GUI client for Linux/BSD Unix.
As of Jan 2006, the G.711 and GSM audio are supported in software. The video H.261 codec is fully supported. Created: 14/03/2004 by Mark Nelson |
| CommercialLibs content, G.711_G.72x area | GAO Research sells speech codecs for quite a few different platforms, including a big batch of DSP parts. They support a wide varity of ITU formats, including G.729, G.711, G.722, and more. Created: 21/12/2003 by Mark Nelson |
| Speech area, MP3 area, CommercialProgs content, G.711_G.72x area | This product takes your text, converts it to speech, then stores the result in one of several compressed formats, including MP3, Ogg Vorbis, and G.721. Created: 07/06/2003 by Mark Nelson |
| Speech area, CommercialLibs content, G.711_G.72x area | The EasyAudio ActiveX Control adds speech handling capabilities to your Win32 program. Listed features include nice things such as support for popular codecs including G.729, G.711, and ADPCM, unicast and multicast support, AGC, jitter buffer management, and noise reduction. The web page gives a price of $1000 for the control, and $2000 for the source code. I hope that big price tag includes free distribution rights, but the web site is woefully short on license information. Version 3.0 is shipping as of March, 2003. Created: 16/03/2003 by Mark Nelson |
| Audio area, ImageCompression area, Video area, CommercialLibs content, G.711_G.72x area | Intel has created a new library designed to deal with varous primitives used in Data Compression. Intel says: Intel® Integrated Performance Primitives (IPP) is a software library which provides a range of library functions for multimedia, audio codecs, video codecs (for example H.263, MPEG-4), image processing (JPEG), signal processing, speech compression (i.e. G.723, GSM ARM*) plus computer vision as well as math support routines for such processing capabilities.Unlike their previous libraries, this is now a commercial product which is going to cost you as much as $199. Works with Windows and Linux. Created: 18/08/2002 by Mark Nelson |
| Tutorials content, Speech area, G.711_G.72x area | The Wikipedia article on speech coding. A very few good definitions, and a very few good links. Created: 27/01/2002 by Mark Nelson |
| Standards content, G.711_G.72x area | This RFC defines the 32 Kbps toll quality MIME type. The true specification for G.726 is owned by the ITU, and will not be generally available on the net. So knowing how it is encoded only somewhat useful. Created: 15/07/2001 by Mark Nelson |
| Speech area, SourceCode content, G.711_G.72x area | An ftp site with various speech codecs, including G.722, GSM, G.711, G.723, G.721, CELP, and LPC. Licensing and ownership of the C source varies. Created: 06/07/2001 by Mark Nelson |
| Speech area, SourceCode content, Papers content, G.711_G.72x area | Descriptions of various speech codecs, include G.711, G.721, GSM, and CELP. Each codec gets a brief description plus pointers to additional material and source code. Created: 20/08/2000 by Mark Nelson |
| CommercialLibs content, Companies content, G.711_G.72x area | These folks make several different G.729 and G.723.1 codecs. Created: 23/01/2000 by Mark Nelson |
| Speech area, CommercialLibs content, Companies content, NonCommercialLibs content, G.711_G.72x area | Has free codecs download, including G.729A. VoiceAge allows developers to freely use their G.729(A) codec object code for non-commercial purposes. This initiative provides you with an opportunity to work with the G.729(A) codec for free while developing products or applications. Our technology served as the foundation for numerous voice compression products used by voice portal and large multinationals in their efforts to better meet the quality requirements that end users. As example voice email, voice chatting, voice annotation in web site. Our technology is already integrated into software by companies such as Microsoft with its Netshow® software and in its Mediaplayer®, and RealNetworks within its RealAudio® and RealVideo®. In addition, over the last decade this compression technology (over 100 patents) was positioned in several International Telecommunication standards, notably: GSM ,PCS, TDMA ,CDMA, TETRA, G.729 . VoiceAge’s compression technology is well positioned at cross road of internet and voice for next-generation of voice portal. Created: 23/01/2000 by Mark Nelson |
