116:(LPC). The bit rate of the codec is 13 kbit/s, or 1.625 bits/audio sample (often padded out to 33 bytes/20 ms or 13.2 kbit/s). The quality of the coded speech is quite poor by modern standards, but at the time of development (early 1990s) it was a good compromise between computational complexity and quality, requiring only on the order of a million additions and multiplications per second. The codec is still widely used in networks around the world. Gradually FR will be replaced by
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The codec operates on 160 sample frames that span 20 ms, so this is the minimum transcoder delay possible even with infinitely fast CPUs and zero network latency. The operational requirement is that the transcoder delay should be less than 30 ms. The transcoder delay is defined as the time interval
214:. Since a GSM speech frame is 32.5 bytes, this implementation also defined a 33-byte nibble-padded representation of a GSM frame (which, at a frame rate of 50/s, is the basis for the incorrect claim that the GSM bit rate is 13.2 kbit/s). This codec can also be compiled into
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between the instant a speech frame of 160 samples has been received at the encoder input and the instant the corresponding 160 reconstructed speech samples have been out-put by the speech decoder at an 8 kHz sample rate.
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with a lookup table. In GSM, the encoded speech is passed to the channel encoder specified in GSM 05.03. In the receive direction, the inverse operations take place.
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is used in the synthesis filter. However, unlike most modern speech codecs, the order of the linear prediction is only 8. In modern
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codec can encode and decode GSM Full Rate audio. "libgsm" was developed 1992–1994 by
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ETSI EN 300 961 V8.1.1 (2000-11) - (GSM 06.10 version 8.1.1 Release 1999)
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libgsm - README - GSM 06.10 13 kbit/s RPE/LTP speech compression
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The GSM 06.10 lossy speech compression library and its applications
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at an 8 kHz sample rate. This can be direct from an
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340:Shared libraries for GSM speech compressor
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403:- RTP payload format for GSM (GSM 06.10)
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285:Extended Adaptive Multi-Rate - Wideband
163:speech codecs the order is usually 16.
378:Winamp Plug-in - Raw GSM Winamp Plugin
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112:digital mobile phone system. It uses
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2244:Comparison of audio coding formats
291:Comparison of audio coding formats
76:Problems playing these files? See
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365:Plug-in Winamp for raw GSM 06.10
59:
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1806:ISO/IEC base media file format
387:, Winamp, Retrieved 2009-10-09
228:The GSM 06.10 is also used in
218:to provide GSM audio support.
1:
212:Technische Universität Berlin
210:and Carsten Bormann, then at
279:Adaptive Multi-Rate Wideband
172:analog-to-digital converter
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2249:Comparison of video codecs
759:(GB/T 33475.2,GY/T 299.1)
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421:- Technical Specification
413:ETS 300 580-2 (GSM 06.10)
376:Cedric Hans (2004-06-08)
317:, Retrieved on 2009-07-08
232:software, for example in
149:linear predictive coding
141:Regular Pulse Excitation
114:linear predictive coding
104:) was the first digital
31:Audio quality comparison
2073:Alliance for Open Media
415:- legacy specifications
407:ETS 300 961 (GSM 06.10)
296:RTP audio video profile
993:MPEG-1 Layer III (MP3)
367:, Retrieved 2009-10-09
354:, Retrieved 2009-09-20
342:, Retrieved 2009-08-31
329:, Retrieved 2009-08-31
26:
16:Speech coding standard
2011:QuickTime File Format
151:(LPC) speech codecs,
108:standard used in the
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2270:Compression software
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904:Sorenson Video/Spark
145:Long Term Prediction
100:or sometimes simply
2268:for techniques and
2266:Compression methods
762:HDR Vivid(GY/T 358)
409:- European Standard
273:Adaptive Multi-Rate
122:Adaptive Multi-Rate
383:2009-09-08 at the
267:Enhanced Full Rate
118:Enhanced Full Rate
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153:linear prediction
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1817:Motion JPEG 2000
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516:Motion JPEG 2000
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198:Implementations
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2254:List of codecs
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2056:Collaborations
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594:Part 2 / LCEVC
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1015:MPEG Surround
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565:Part 2 / HEVC
563:
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553:Part 33 / IVC
551:
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548:Part 10 / AVC
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208:Jutta Degener
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186:PCM from the
185:
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107:
106:speech coding
103:
99:
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87:
81:
79:
56:
55:Original file
37:
2290:Audio codecs
1320:(GB/T 22726)
1225:
981:Multichannel
837:MSU Lossless
751:AVS1 P2/AVS+
705:TrueMotion S
643:H.265 / HEVC
589:Part 1 / EVC
577:Part 3 / VVC
543:Part 2 / ASP
419:3GPP TS06.10
372:
363:Cedric Hans
359:
347:
334:
322:
310:
252:and others.
227:
220:
203:
201:
192:
165:
132:
131:
101:
97:
93:
89:
85:
84:
2038:MOD and TOD
1979:Flash Video
1917:3GP and 3G2
1598:HEIC / HEIF
1550:compression
1310:Audio Vivid
1045:MPEG-D USAC
1040:MPEG-4 CELP
1035:MPEG-4 HVXC
950:compression
782:Apple Video
698:and AOMedia
648:H.266 / VVC
638:H.264 / AVC
480:compression
465:compression
338:Ubuntu.com
2284:Categories
2272:for codecs
2219:Daubechies
2194:Transforms
2096:Arithmetic
1763:Containers
1468:True Audio
1312:(GY/T 363)
1030:MPEG-4 DST
1025:MPEG-4 SLS
1020:MPEG-4 ALS
894:SheerVideo
868:QuickTime
696:TrueMotion
462:Multimedia
302:References
157:narrowband
128:Technology
120:(EFR) and
98:GSM 06.10
78:media help
2021:RealMedia
1623:JPEG 2000
1426:RealAudio
1406:OptimFROG
884:RealVideo
872:Animation
842:OMS Video
469:container
287:(AMR-WB+)
262:Half Rate
202:The free
86:Full Rate
36:Full Rate
2140:Lossless
2106:Modified
1999:Matroska
1878:Matroska
1789:MPEG-PES
1401:Musepack
1298:AVS1 P10
877:Graphics
827:Lagarith
427:homepage
401:RFC 3551
381:Archived
281:(AMR-WB)
256:See also
250:Ventrilo
242:Linphone
161:wideband
2214:Wavelet
2155:DEFLATE
2101:Huffman
2091:Entropy
2083:Methods
2068:MPEG LA
1957:Smacker
1845:H.222.0
1801:MPEG-TS
1796:MPEG-PS
1784:MPEG-ES
1668:TIFF/IT
1663:TIFF/EP
1648:JPEG XT
1643:JPEG XS
1638:JPEG XR
1633:JPEG XL
1628:JPEG-LS
1509:aptX HD
1489:WavPack
1431:RTAudio
1371:Codec 2
1304:AVS2 P3
1231:GSM-EFR
1201:AMR-WB+
1135:G.729.1
1115:G.723.1
1105:G.722.2
1100:G.722.1
899:Smacker
889:RTVideo
817:Huffyuv
797:Cinepak
757:AVS2 P2
471:formats
238:QuteCom
2016:RatDVD
1910:Others
1677:Others
1479:VMR-WB
1474:TwinVQ
1339:Others
1226:GSM-FR
1221:GSM-HR
1211:EVRC-B
1196:AMR-WB
1168:Vorbis
1008:AAC-LD
1003:HE-AAC
909:Theora
852:ProRes
847:Pixlet
775:Others
584:MPEG-5
572:MPEG-I
560:MPEG-H
538:MPEG-4
531:Part 2
526:MPEG-2
521:MPEG-1
425:Libgsm
223:Winamp
204:libgsm
133:GSM-FR
94:GSM-FR
2237:Lists
2182:ADPCM
2177:µ-law
2172:A-law
2145:Lossy
2118:ACELP
2063:NETVC
1888:SMPTE
1850:T.802
1837:ITU-T
1813:(MP4)
1613:JBIG2
1576:ITU-T
1548:Image
1484:VSELP
1461:SVOPC
1451:Siren
1421:RCELP
1416:QCELP
1361:ATRAC
1346:ACELP
1163:Speex
1130:G.729
1125:G.728
1120:G.726
1110:G.723
1095:G.722
1090:G.719
1085:G.718
1078:µ-law
1073:A-law
1068:G.711
1060:ITU-T
948:Audio
822:Indeo
802:Daala
658:SMPTE
633:H.263
628:H.262
623:H.261
618:H.120
606:ITU-T
511:MJPEG
478:Video
275:(AMR)
269:(EFR)
234:Ekiga
184:ÎĽ-law
180:A-law
176:G.711
2264:See
2209:MDCT
2187:DPCM
2133:WLPC
2123:CELP
2026:RIFF
2004:WebM
1994:M2TS
1984:HEIF
1952:Bink
1932:AIFF
1860:IETF
1749:WebP
1744:WBMP
1739:QTVR
1719:ICER
1714:FLIF
1704:DjVu
1694:AVIF
1684:APNG
1658:TIFF
1618:JPEG
1608:JBIG
1603:HEVC
1580:JPEG
1567:IETF
1534:LLAC
1529:LHDC
1524:LDAC
1504:aptX
1465:TTA
1446:SILK
1386:MELP
1381:Lyra
1376:iSAC
1366:CELT
1356:Asao
1351:ALAC
1329:ExAC
1324:L2HC
1254:AC-4
1249:AC-3
1241:ETSI
1206:EVRC
1183:3GPP
1173:FLAC
1158:iLBC
1153:Opus
1145:IETF
968:MPEG
934:YULS
914:Thor
862:4444
812:FFV1
792:Bink
686:VC-6
681:VC-5
676:VC-3
671:VC-2
666:VC-1
610:VCEG
498:MPEG
467:and
230:VoIP
216:Wine
188:PSTN
137:ETSI
2224:DWT
2204:FFT
2199:DCT
2167:PCM
2160:LZW
2128:LSP
2113:LPC
2031:WAV
1989:IFF
1974:EVO
1964:BMP
1947:BPG
1937:AVI
1927:ASF
1922:AMV
1901:MXF
1896:GXF
1873:Ogg
1868:RTP
1776:IEC
1772:ISO
1734:QOI
1729:PGF
1724:MNG
1709:EXR
1699:BPG
1689:AV1
1653:PNG
1593:GIF
1572:W3C
1563:ISO
1559:IEC
1499:MQA
1494:WMA
1456:SMV
1441:SHN
1436:SD2
1411:OSQ
1396:MT9
1318:DRA
1282:LC3
1277:SBC
1259:DTS
1216:EVS
1191:AMR
998:AAC
963:IEC
959:ISO
929:XEB
924:WMV
857:422
807:DVI
787:AVS
735:AV1
730:VP9
725:VP8
720:VP7
715:VP6
710:VP3
493:IEC
489:ISO
182:or
168:PCM
110:GSM
102:GSM
96:or
92:or
2286::
2150:LZ
1942:AU
1774:,
1578:,
1574:,
1569:,
1565:,
1561:,
961:,
919:Ut
608:,
506:DV
495:,
491:,
248:,
244:,
240:,
236:,
143:-
90:FR
965:,
454:e
447:t
440:v
88:(
80:.
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