Sources for Codec Software

• Encore Speech Codecs Commercial
• Global IP Sound - Commercial technology used by Skype
• HawkVoice - Opensource codecs
• Howler Technologies Commercial
• Links for codec source code
• Portal for Software Codecs Commercial
• ftp://ftp.cs.cmu.edu/project/fgdata/speech-compression/ source code for various codecs
• ITU reference code source code for codecs
• Agora Labs Nine-9s Commercial
• datacompression.info - Links to codec info and source code
• SprintDSP Commerical Telecom software FAX, Modems, Codecs, etc.
• Vocal Commercial
• Andrew Lindh Mailing List Posting pointer to free source code for ITU G.722 Codec implementation
• Adaptive Digital Technologies Commercial telecom and VoIP software solutions

From a comp.dsp newsgroup thread
Someone said that the book: "C Algorithms for Real-time DSP" by Paul Embree includes code
for g.711 and g.722.

There is some GSM and G.722 ADPCM code in the Digital Signal Processing Applications Using the ADSP-2100 Family book - volume 2 ftp://ftp.analog.com/pub/dsp/21xx/pre-8x/examples/apps2.zip

See Also:

• Codecs