G.723

ITU-T Recommendation

G.723
Extensions of Recommendation G.721 adaptive differential pulse code modulation to 24 and 40 kbit/s for digital circuit multiplication equipment application

Status	Withdrawn
Latest version	(11/88) November 1988
Organization	ITU-T
Base standards	G.721
Related standards	G.726
Domain	audio compression
License	Freely available
Website	https://www.itu.int/rec/T-REC-G.723

G.723 is an ITU-T standard speech codec using extensions of G.721 providing voice quality covering 300 Hz to 3400 Hz using Adaptive Differential Pulse Code Modulation (ADPCM) to 24 and 40 kbit/s for digital circuit multiplication equipment (DCME) applications. The standard G.723 is obsolete and has been superseded by G.726.^[1]

Note that this is a completely different codec from G.723.1.

External links

Multimedia compression and container formats

Video
compression

ISO, IEC, MPEG	DV MJPEG Motion JPEG 2000 MPEG-1 MPEG-2 Part 2 MPEG-4 Part 2 / ASP Part 10 / AVC Part 33 / IVC MPEG-H Part 2 / HEVC MPEG-I Part 3 / VVC MPEG-5 Part 1 / EVC Part 2 / LCEVC
ITU-T, VCEG	H.120 H.261 H.262 H.263 H.264 / AVC H.265 / HEVC H.266 / VVC
SMPTE	VC-1 VC-2 VC-3 VC-5 VC-6
TrueMotion	TrueMotion S VP3 VP6 VP7 VP8 VP9 AV1
Others	Apple Video AVS Bink Cinepak Daala DVI FFV1 Huffyuv Indeo Lagarith Microsoft Video 1 MSU Lossless OMS Video Pixlet ProRes 422 4444 QuickTime Animation Graphics RealVideo RTVideo SheerVideo Smacker Sorenson Video/Spark Theora Thor Ut WMV XEB YULS

Audio
compression

ISO, IEC, MPEG	MPEG-1 Layer II Multichannel MPEG-1 Layer I MPEG-1 Layer III (MP3) AAC HE-AAC AAC-LD MPEG Surround MPEG-4 ALS MPEG-4 SLS MPEG-4 DST MPEG-4 HVXC MPEG-4 CELP MPEG-D USAC MPEG-H 3D Audio
ITU-T	G.711 A-law µ-law G.718 G.719 G.722 G.722.1 G.722.2 G.723 G.723.1 G.726 G.728 G.729 G.729.1
IETF	Opus iLBC Speex Vorbis
3GPP	AMR AMR-WB AMR-WB+ EVRC EVRC-B EVS GSM-HR GSM-FR GSM-EFR
ETSI	AC-3 AC-4 DTS
Bluetooth SIG	SBC LC3
Others	ACELP ALAC Asao ATRAC AVS CELT Codec 2 DRA FLAC iSAC Lyra MELP Monkey's Audio MT9 Musepack OptimFROG OSQ QCELP RCELP RealAudio RTAudio SD2 SHN SILK Siren SMV SVOPC TTA True Audio TwinVQ VMR-WB VSELP WavPack WMA MQA aptX aptX HD aptX Low Latency aptX Adaptive LDAC LHDC LLAC L2HC

Image
compression

IEC, ISO, IETF, W3C, ITU-T, JPEG	CCITT Group 4 GIF HEIC / HEIF HEVC JBIG JBIG2 JPEG JPEG 2000 JPEG-LS JPEG XL JPEG XR JPEG XS JPEG XT PNG TIFF TIFF/EP TIFF/IT
Others	APNG AV1 AVIF BPG DjVu EXR FLIF ICER MNG PGF QOI QTVR WBMP WebP

ISO, IEC	MPEG-ES MPEG-PES MPEG-PS MPEG-TS ISO/IEC base media file format MPEG-4 Part 14 (MP4) Motion JPEG 2000 MPEG-21 Part 9 MPEG media transport
ITU-T	H.222.0 T.802
IETF	RTP Ogg
SMPTE	GXF MXF
Others	3GP and 3G2 AMV ASF AIFF AVI AU BPG Bink Smacker BMP DivX Media Format EVO Flash Video HEIF IFF M2TS Matroska WebM QuickTime File Format RatDVD RealMedia RIFF WAV MOD and TOD VOB, IFO and BUP

Collaborations

Lists

See Compression methods for techniques and Compression software for codecs

v t e ITU recommendations (standards)
Lists: List of ITU-T V-series recommendations List of ITU letter codes Categories: Category:ITU-R recommendations Category:ITU-T recommendations
G series (ITU-T)	G.114 G.165 G.703 G.704 G.706 G.707 G.709 G.711 G.718 G.719 G.722 G.722.1 G.722.2 G.729.1 G.723 G.723.1 G.726 G.728 G.729 G.783 G.798 G.806 G.811 G.983 G.984 G.987 G.988 G.991.1 G.991.2 G.992.1 G.992.2 G.992.3 Annex J Annex L G.992.4 G.992.5 Annex M G.993.1 G.993.2 G.7041 G.7042 G.7043 G.8262 G.9700, G.9701, G.9710 and G.9711 G.9960 G.9970 G.9972
H series (ITU-T)	H.222.0 H.225.0 H.235 H.239 H.241 H.245 H.248 H.261 H.262/MPEG-2 Video H.263 H.264/MPEG-4 AVC H.265/MPEG-H HEVC H.266/MPEG-I VVC H.320 H.323 H.323 Gatekeeper H.324 H.450
V series (ITU-T)	V.10 V.11 V.23 V.24 V.92
ITU-R	ITU-R 468 noise weighting ITU-R BS.1534-1 ITU-R BT.1304 ITU-R BT.470-6 ITU-R BT.470-7 ITU-R BT.601 ITU-R BT.709 ITU-R BT.2020 ITU-R BT.2100
See also: All articles beginning with "ITU"

^ "G.723: Extensions of Recommendation G.721 adaptive differential pulse code modulation to 24 and 40 kbit/s for digital circuit multiplication equipment application". www.itu.int. Archived from the original on 2021-06-13. Retrieved 2021-06-13.