Codec 2 - Open Source Speech Coding at 2400 bit/s and Below - David Rowe

Codec2 is an open source low bit rate speech codec designed for communications quality speech at around 2400 bit/s. Applications include low bandwidth HF/VHF digital radio and VOIP trunking. Codec 2 operating at 2000 bit/s can send 32 phone calls using the bandwidth required for one 64 kbit/s uncompressed phone call. It fills a gap in open source, free-as-in-speech voice codecs beneath 5000 bit/s and is released under the GNU Lesser General Public License (LGPL).

Category:

Science & Technology

Tags:

• lca_2012
• DavidRowe

[TimmmmCam]

Good work. Why is it 8 kHz when it is model based though? You could use 48 kHz with no cost right (apart from maybe processing cost)?