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Codec 2

Codec 2 is a low-bitrate speech audio codec (speech coding) that is patent free and open source. Codec 2 compresses speech using sinusoidal coding, a method specialized for human speech. Bit rates of 3200 to 450 bit/s have been successfully created. Codec 2 was designed to be used for amateur radio and other high compression voice applications.

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Developer
David Grant Rowe
License
GNU LGPL, v2.1
Platform
Cross-platform
Release
August 25, 2010 (2010-08-25)
Repository
github.com/drowe67/codec2
Stable release
1.2.0 / June 24, 2023; 3 years ago (2023-06-24)

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Technology

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Codec 2

Nodes49
Edges48
Triples37
Avg. degree1.96
Density0.040816
Components1

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Codec 2

Top relations

related to Technology · 12
Codec 2 → Codec, Each, Internally, Linear Predictive Coding, LPC, LSP, LSP's, PCM, Sinusoidal, Spoken, The, The LSP
related to overview · 10
Codec 2 → Advanced Multi-Band Excitation, Codec, David Grant Rowe, For, It, Jean-Marc Valin, Opus, PCM, The, When
related to Adoption · 5
Codec 2 → Codec, FreeDVFlexRadio, MANET, ProjectDTC Sentry Mesh, Software Defined Radio Systems
Developer · 1
Codec 2 → David Grant Rowe
License · 1
Codec 2 → GNU LGPL, v2.1
Platform · 1
Codec 2 → Cross-platform
Release · 1
Codec 2 → August 25, 2010 (2010-08-25)
Repository · 1
Codec 2 → github.com/drowe67/codec2
Stable release · 1
Codec 2 → 1.2.0 / June 24, 2023; 3 years ago (2023-06-24)
Type · 1
Codec 2 → Audio codec

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Important terminology

codec bit speech audio coding voice rowe digital rate mode bits radio sinusoidal bytes source 3200 amateur david sent version

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Codec 2DeveloperDavid Grant Rowe1.00infobox
Codec 2LicenseGNU LGPL, v2.11.00infobox
Codec 2PlatformCross-platform1.00infobox
Codec 2ReleaseAugust 25, 2010 (2010-08-25)1.00infobox
Codec 2Repositorygithub.com/drowe67/codec21.00infobox
Codec 2Stable release1.2.0 / June 24, 2023; 3 years ago (2023-06-24)1.00infobox
Codec 2TypeAudio codec1.00infobox
Codec 2Websitewww.rowetel.com?page_id=4521.00infobox
Codec 2Written inC991.00infobox
Codec 2is alow-bitrate speech audio codec0.90text
Codec 2related to AdoptionCodec0.60section
Codec 2related to AdoptionSoftware Defined Radio Systems0.60section

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