524:(a professional-only codec used in audio/video applications) on an AES interface. The SMPTE 337 standard specifies the signalling and carriage of signals that are not PCM audio over an AES-3 interface, and the SMPTE 340-2008 standard specifies how Dolby Digital Plus and Dolby Digital are to be transmitted over that interface. The combination of SMPTE 340-2008 and 337M allow the Dolby Digital Plus bitstream to be stored and transported within professional production, contribution and distribution workflows prior to emission to consumers.
692:
is used on players that support it by replacing the rear channels in the 5.1 setup with higher fidelity versions, along with providing a possible channel extension to 6.1 or 7.1. The complete audio track is allowed a combined bitrate of 1.7 Mbit/s: 640 kbit/s for the AC-3 5.1 core, and 1 Mbit/s for the DD+ extension. During playback, both the core and extension bitstreams contribute to the final audio-output, according to rules embedded in the bitstream metadata.
34:
134:(AC-3), and has a number of improvements over that codec, including support for a wider range of data rates (32 kbit/s to 6144 kbit/s), an increased channel count, and multi-program support (via substreams), as well as additional tools (algorithms) for representing compressed data and counteracting artifacts. Whereas Dolby Digital (AC-3) supports up to five full-bandwidth
275:, are used; these are known as "D15", "D25", and "D45". In D15, each bin has a unique exponent, while in D25 and D45, delta values correspond to either pairs or quads of frequency bins. Audio blocks other than the first in a syncframe may additionally reuse the prior block's exponent set (this is required for channels that use the Adaptive Hybrid Transform).
268:(MDCT), which is used to transform the audio signal into the frequency domain; within each block up to 256 frequency coefficients may be transmitted. Coefficients are transmitted in a binary floating-point format, with exponents transmitted separately from mantissas. This allows for highly efficient coding.
229:
encoder latency is an important concern). Each syncframe is independently decodable, and belongs to a specific substream within the service. A syncframe consists of the following syntax elements (some of which may be elided when a Dolby
Digital Plus service is encapsulated into another format or transport):
504:
data is passed unchanged, but any gain scaling or sample rate conversion, operations which are aurally harmless to PCM data, will corrupt and destroy a Dolby
Digital Plus stream. (Older codecs such as DTS or AC-3 are more likely to be recognized as compressed formats and protected from such processing).
691:
On Blu-ray Disc, DD+ is an optional codec, and is deployed as an extension to a "core" AC-3 5.1 audiotrack. The AC-3 core is encoded at 640 kbit/s, carries 5 primary channels (and 1 LFE), and is independently playable as a movie audio track by any Blu-ray Disc player. The DD+ extension bitstream
547:
Dolby
Digital Plus is seeing increasing use in digital television systems, particular in cable and satellite systems, as a replacement for Dolby Digital. Many such applications do not take advantage of its higher channel count or ability to support multiple independent programs; instead it is used as
278:
The decoded exponents, along with a set of metadata parameters, is used to derive the bit allocation pointers (BAPs), which specify the number of bits allocated to each mantissa. Bins which correspond to frequencies in which human hearing is more precise are allocated more bits; bins which correspond
737:
standard can transcode the decoded audio into another format. Depending upon the method and options available to the player, this can be done with relatively little quality loss. Dolby's reference decoder, available to all licensees, exploits the common heritage between AC-3 and E-AC-3 by performing
478:
Note: All of the decoder operating modes (listed above) are available in every Dolby
Digital Plus decoder. The default operating mode is governed by device category and application. In some devices, users may also have a choice (via menu) to select an alternate mode that suits their particular taste
336:
As many multi-channel audio programs have high degrees of correlation between individual channels, a coupling channel is typically used. High frequency information which is common among two or more channels is transmitted in a separate channel (one that is not reproduced by a decoder, but only mixed
199:
Dependent substreams, which contain additional channels beyond the traditional 5.1 channels. As dependent substreams have the same structure as independent substreams, each dependent substream may contain up to five full-bandwidth channels and one low-frequency channel; however these channels may be
570:
include Dolby
Digital Plus. It is a mandatory component of HD DVD and an optional component of Blu-ray. The maximum number of discrete coded channels is the same for both formats: 7.1. However, HD DVD and Blu-ray impose different technical constraints on the supported audio-codecs. Hence,
383:
Transient pre-noise processing (TPNP) is a Dolby
Digital Plus-specific tool to reduce the resulting artifacts of signal quantization and other compression techniques. Unlike the other tools described above, which operate in the frequency domain and precede the conversion back into PCM samples, TPNP
687:
On HD DVD, DD+ is designated a mandatory audio codec. A HD DVD movie may use DD+ as the primary (or only) audio track. A HD DVD player is required to support DD+ audio by decoding and outputting it to the player's output jacks. As stored on disc, the DD+ bitstream can carry for any number of audio
400:
decoders. However, Dolby
Digital Plus is a functional superset of Dolby Digital, and decoders include a mandatory component that directly converts (without decoding and re-encoding) the Dolby Digital Plus bitstream to a Dolby Digital bitstream (operating at 640 kbit/s) for carriage via legacy
208:
Within each substream, provision is made for encoding five full-bandwidth channels, one low-frequency channel, and one coupling channel. The coupling channel is used for medium-to-high-frequency information which is common to multiple full-bandwidth channels. Its content is mixed in with the other
519:
interface is the professional analog to S/PDIF, Dolby
Digital Plus streams may be carried over AES-3 connections with sufficient bandwidth, and/or over other interfaces that encapsulate AES-3 (such as SMPTE 259M and SMPTE 299M embedded audio). Additional standards promulgated by SMPTE specify the
503:
Much consumer gear, and even some professional gear, does not recognize Dolby
Digital Plus as an encoded format, and will treat DD+ signals over a S/PDIF or similar interface, or stored in a .WAV file or similar container format, as though they were linear PCM data. This is not problematic if the
355:
Dolby
Digital Plus provides another tool for high frequencies. As high frequency components are often harmonics of lower-frequency sounds, Spectral Extension (SPX) allows high frequency components to be synthesized algorithmically from lower-frequency components. This tool is also unique to Dolby
228:
packets, each of which corresponds to either 256, 512, 768, or 1536 consecutive time-domain audio samples. (The 1536-sample case is the most common case, and corresponds to Dolby Digital; the shorter subframe lengths are intended for use in interactive applications like video games where reducing
220:
Dolby Digital Plus is nominally a 16-bit-aligned protocol, though very few fields in the syntax respect any byte or word boundaries. As many syntax elements are optional or variable-length, including some whose presence or length is dependent on complex preceding calculations, and there is little
543:
For broadcast (emission) to consumers, the Dolby Digital Plus bitstream is packetized in an MPEG elementary stream, and multiplexed (with video) into an MPEG Transport Stream. In ATSC systems, the specification for carrying Dolby Digital Plus is described in ATSC A/53 Part 3 & Part 6. In DVB
408:
bitstreams are encoded to be backwards compatible with Dolby Digital Plus decoders, and as such Dolby Atmos can be decoded by Dolby Digital Plus compatible devices. This has been marketed by Dolby, as the lossy compression variation of Dolby Atmos under the label "Dolby Digital Plus Atmos" to
370:
Stereo programs are typically rematrixed and encoded as an L+R and L-R channel. This is done both to increase coding gain (the L-R channel can typically be heavily compressed, and the subsequent un-matrixing will cause many compression artifacts to cancel), and to preserve phase relationships
192:
Independent substreams, which can contain a single program of up to 5.1 channels. Up to eight dependent substreams may be present in a Dolby Digital Plus stream. The channels present in an independent substream are limited to the traditional 5.1 channels: Left (L), Right (R), Center (C), Left
420:
One design goal of DD+ is quality playback in a variety of environments, ranging from home theaters and other acoustically controlled environments where high dynamic range playback is feasible, to portable and automotive environments where much background noise is present, and dynamic range
204:
All DD+ streams must contain at least one independent substream or legacy substream, which contains the first (or only) 5.1 channels of the primary audio program. Additional independent substreams may be used for secondary audio programs such as foreign language soundtracks, commentary, or
340:
Dolby Digital Plus supports a more elaborate version of the coupling tool known as Enhanced Coupling (ECPL). This algorithm, which is considerably more expensive to process (both for encoders and decoders) allows phase information to be included in coupling coordinates, allowing for phase
236:
A Bitstream Info (BSI) section, which includes key metadata such as the frame size, the bitstream identifier (which specifies the version of syntax used), channel mode, the substream identifier, the encoded dialog level (dialnorm), and metadata to guide decoder production of a
328:, which gives the highest coding gain, and use of gain-adapted quantization (GAQ) when greater signal-fidelity is required. Gain-adaptive quantization may be independently enabled for each frequency bin within a channel, and permits variable-length mantissa encoding.
722:
Most receivers and players support S/PDIF. This lower bandwidth digital connection is not capable of transmitting lossless PCM audio with more than two channels, but a player can transmit a S/PDIF compatible audio stream to the receiver in one of the following ways:
324:(DCT) to combine six adjacent transform blocks (located within a syncframe) into an effectively longer block. In addition to the two-stage transform, a different bit-allocation structure is used, and two ways of representing encoded mantissas are deployed: use of
482:
In addition, Dolby Digital and DD+ contain additional metadata to permit error-free translation into range-restricted downstream channels, such as RF modulation, where excessive output signal amplitude may result in significant distortion or modulation errors.
738:
the operation in the frequency domain. Hybrid re-compression avoids unnecessary end-to-end decompression and subsequent recompression (E-AC-3 → LPCM → AC-3). In addition to AC-3, some HD DVD players transcode audio compatible with S/PDIF into 1.5 Mbit/s
279:
to frequencies that humans are less sensitive to are allocated fewer. Anywhere between zero and 16 bits may be allocated for each mantissa; if zero bits are transmitted, a dither function may be optionally applied to generate the frequency coefficient.
319:
For highly stationary signals, such as long notes in musical performance, the Adaptive Hybrid Transform (AHT) is used. This tool is unique to Dolby Digital Plus (and unsupported in Dolby Digital), and uses an additional Type II
303:(MDCT), with a switchable block length of either 256 or 512 samples (the latter is used with stationary signals, the former with transient signals). The frequency domain representation is then quantized according to a
291:; this section describes the operation of the base transform as well as various optional "tools" specified by the standard, which are used to achieve either greater compression or to reduce audible coding artifacts.
247:
One, two, three, or six Audio Block sections. These sections contain additional decoding metadata, as well as the encoded and quantized frequency coefficients. Each Audio Block corresponds to 256 PCM samples in each
271:
Exponents for each channel are encoded in a highly packed differential format, with the deltas between consecutive frequency bins (other than the first) being given in the stream. Three formats, or
337:
back into the original channels) known as the coupling channel; along with coefficients known as "coupling coordinates" that guide the decoder on how to reconstruct the original channels.
700:
Generally, a Dolby Digital Plus bitstream can only be transported over an HDMI 1.3 or greater link. Older receivers support earlier versions of HDMI, or only have support for the
212:
Dolby Digital Plus includes comprehensive bitstream metadata for decoder control over output loudness (via dialnorm), downmixing, and reversible dynamic range control (via DRC).
240:
An Audio Frame section, which contains decoding information common to all audio blocks within the syncframe, including the necessary information to determine how exponents and
196:
Legacy substreams, which contain a single 5.1 program, and which correspond directly to Dolby Digital content. At most a single legacy substream may be present in a DD+ stream.
86:
500:
interface has insufficient bandwidth to transport Dolby Digital Plus (E-AC-3) bitstreams at the 3.0 Mbit/s datarate specified by HD DVD; lower datarates are possible.
826:
557:
742:. While S/PDIF can carry Dolby Digital Plus at lower bitrates, the HD DVD standard specifies a bitrate for DD+ which is too high for a S/PDIF interface to transmit.
221:
redundancy in the syntax, DD+ can be extremely difficult to parse correctly, with syntactically valid but incorrect parsings easily produced by defective encoders.
1087:
401:
S/PDIF connections (including S/PDIF over HDMI) to external decoders (e.g. AVRs, etc.). All Dolby Digital Plus decoders can decode Dolby Digital bitstreams.
896:
496:
IEC 61937-3: defines how to transmit Dolby Digital (AC-3) and Dolby Digital Plus (E-AC-3) bitstreams via an IEC 60958/61937 (S/PDIF) interface. However, the
472:
Portable Device Speaker & Headphone Playback – Provides Minimum Dynamic Range (similar to music production/mixing/mastering techniques)
205:
descriptions/voiceovers for the visually impaired. Dependent substreams may be provided for programs that have additional soundstage channels beyond 5.1.
746:
Should the player need to decode the audio for a non-HDMI 1.3 receiver, the results should be predictable. The DD+ specification explicitly defines
730:
players can take advantage of the legacy 5.1 AC-3 bitstream embedded in the E-AC-3 bitstream, transmitting just the AC-3 bitstream with no modifications.
384:
is a tool which essentially performs a windowed cut-and-paste operation on the time-domain signal to erase certain predictable quantization artifacts.
540:
system, and is commonly used for other DTV applications (such as cable and satellite broadcast) in countries which use ATSC for digital television.
79:
750:
modes and mechanics, so any source soundfield (up to 14.1) can be reproduced predictably for any listening environment (down to a single channel).
145:
The full set of technical specifications for E-AC-3 (and AC-3) are standardized and published in Annex E of ATSC A/52:2012, as well as Annex E of
718:
Some receivers and players support analog surround sound, and the player can decode the audio, and transmit it to the receiver as analog audio.
825:
Andersen, Robert Loring; Crockett, B.; Davidson, G.; Davis, Mark; Fielder, L.; Turner, Stephen C.; Vinton, M.; Williams, P. (1 October 2004).
533:
1921:
72:
1433:
1080:
300:
265:
287:
Dolby Digital Plus, like many lossy audio codecs, uses a heavily quantized frequency-domain representation of the signal to achieve
138:
at a maximum bitrate of 640 kbit/s, E-AC-3 supports up to 15 full-bandwidth audio channels at a maximum bitrate of 6.144
1791:
889:
409:
differentiate it from the lossless DolbyHD-based original. Most Dolby Digital Plus bitstreams are now encoded in Atmos encoding.
251:
A final section containing user-defined auxiliary data, any necessary padding to produce uniform syncframe lengths, and a 16-bit
837:
799:
1906:
1073:
1885:
1881:
1727:
1114:
1105:
959:
1926:
882:
707:
For non-HDMI 1.3 links, the player can decode the audio and then transmit it via a variety of different methods.
1776:
1611:
1549:
1474:
854:
200:
assigned to different speaker placements. Metadata in the substream describes the purpose of each included channel.
350:
321:
544:
systems, the specification for carrying Dolby Digital Plus is described in ETSI TS 101 154 and ETSI EN 300 468.
1858:
209:
channels in a fashion prescribed by the metadata, it is not reproduced as a discrete channel by the decoder.
252:
1911:
1407:
393:
299:
Both Dolby Digital and DD+ encoder converts a multichannel audio signal to the frequency domain using the
169:
Audio channels: 1.0 to 15.1 (i.e. from mono to 15 full range channels and a low frequency effects channel)
1916:
1821:
1796:
1674:
1569:
1531:
1452:
1153:
1835:
1541:
1387:
807:, European Telecommunications Standards Institute, 20 September 2017, ETSI TS 102 366 V1.4.1 (2017-09
780:
507:
Dolby Digital Plus may be transmitted across HDMI 1.3 or newer, according to IEC 61937-3.
1511:
1357:
1260:
325:
139:
715:, where the player decodes the audio and transmits it losslessly as PCM over HDMI to the receiver.
193:
Surround (Ls), and Right Surround (Rs) channels, as well as a Low Frequency Effects (Lfe) channel.
1457:
1143:
979:
759:
739:
537:
54:
1622:
1564:
1444:
1268:
1227:
1222:
1603:
1425:
1233:
1096:
123:
1579:
1377:
1278:
964:
954:
304:
311:
and exponents are stored and transmitted separately, with both being heavily compressed.
1801:
1462:
1239:
1183:
1138:
827:"Introduction to Dolby Digital Plus, an Enhancement to the Dolby Digital Coding System"
424:
DD+ provides the following operating modes for different listener/viewer environments.
372:
307:
model and transmitted. A floating-point format for frequency coefficients is used, and
1900:
1631:
1303:
1173:
1125:
1054:
939:
397:
135:
131:
1702:
1649:
1163:
989:
984:
974:
934:
727:
567:
365:
130:
for the transport and storage of multi-channel digital audio. It is a successor to
33:
461:
TV Speaker Playback – Provides Typical "broadcast" Dynamic Range
1004:
994:
919:
405:
308:
288:
241:
520:
encoding of Dolby transports, including Dolby Digital, Dolby Digital Plus, and
1786:
1771:
1559:
1501:
1022:
1017:
747:
127:
571:
the usage of DD+ differs substantially between HD DVD and Blu-ray Disc.
450:
Home Theatre Playback – Provides Full "cinema" Dynamic Range
1712:
1574:
1293:
1288:
1250:
1189:
1065:
1038:
1012:
712:
421:
compression may be necessary to make all parts of an audio program audible.
558:
Comparison of high definition optical disc formats § Technical details
688:
channels up to the maximum allowed, at any bitrate up to 3.0 Mbit/s.
1853:
1756:
1707:
1687:
1521:
1392:
1209:
1158:
969:
929:
924:
20:
855:"avcodec/eac3: add support for dependent stream · FFmpeg/FFmpeg@ae92970"
575:
Dolby Digital (AC-3) and Dolby Digital Plus (E-AC-3) bitrate comparison
1848:
1761:
1682:
1584:
1496:
1308:
1148:
949:
521:
1816:
1811:
1697:
1654:
1526:
1323:
1318:
1313:
1245:
1217:
1178:
874:
734:
701:
563:
497:
1781:
1766:
1516:
1484:
1352:
1298:
1273:
1194:
1133:
905:
341:
relationships between channels that are coupled to be preserved.
1863:
1843:
1740:
1735:
1717:
1692:
1664:
1659:
1644:
1639:
1589:
1554:
1506:
1489:
1467:
1397:
1382:
1372:
1367:
1362:
1199:
516:
146:
1069:
878:
1806:
1479:
1413:
1283:
1168:
511:
Physical transport for professional devices and applications
779:
Advanced Television Systems Committee (17 December 2012),
711:
Earlier versions of HDMI, such as HDMI 1.1, support
19:"DD+" and "DD Plus" redirect here. For the bra size, see
801:
Digital Audio Compression (AC-3, Enhanced AC-3) Standard
487:
Encapsulation, use, and storage of Dolby Digital streams
782:
ATSC Standard: Digital Audio Compression (AC-3, E-AC-3)
184:
A Dolby Digital Plus service consists of one or more
1834:
1749:
1726:
1673:
1630:
1621:
1602:
1540:
1443:
1424:
1406:
1345:
1336:
1259:
1208:
1124:
1104:
1047:
1031:
1003:
912:
60:
50:
40:
532:Either DD+ or Dolby Digital is specified by the
528:Consumer broadcast in digital television systems
356:Digital Plus, and unsupported in Dolby Digital.
264:At the heart of both Dolby Digital and DD+ is a
162:Dolby Digital Plus is capable of the following:
392:Dolby Digital Plus bitstreams are not directly
233:A 16-bit sync word, which has the value 0x0b77.
1081:
890:
224:A DD+ stream is a collection of fixed-length
80:
8:
704:system for digital audio, or analog inputs.
427:Dolby Digital Plus Decoder Operating Modes:
26:
1627:
1618:
1440:
1342:
1121:
1088:
1074:
1066:
897:
883:
875:
646:optional, available for rear channels only
87:
73:
388:Relation to Dolby Digital and Dolby Atmos
172:Number of audio programs per bitstream: 8
166:Coded bitrate: 0.032 to 6.144 Mbit/s
834:Journal of The Audio Engineering Society
788:, Washington, DC: Author, ATSC A/52:2012
573:
536:as the primary audio codec for the ATSC
429:
771:
492:Physical transport for consumer devices
188:. There are three types of substreams:
25:
965:Dolby Surround/Pro Logic/Pro Logic II
548:a higher-efficiency codec than AC-3.
534:Advanced Television Systems Committee
7:
175:Sample rate: 32, 44.1 or 48 kHz
301:modified discrete cosine transform
295:Modified discrete cosine transform
266:modified discrete cosine transform
14:
371:necessary for proper playback of
260:Storage of transform coefficients
124:digital audio compression scheme
32:
315:Adaptive hybrid transform (AHT)
379:Transient pre-noise processing
1:
106:(and commonly abbreviated as
960:Dolby noise-reduction system
760:DTS-HD High Resolution Audio
696:Media players and downmixing
1945:
1922:High-definition television
655:
632:
609:
555:
363:
348:
18:
1876:
913:Technologies and products
585:
582:
579:
436:Reference Loudness (LKFS)
416:Dynamic range compression
351:Spectral band replication
322:discrete cosine transform
255:code for error detection.
68:
31:
733:Players supporting the
552:HD DVD and Blu-ray Disc
253:cyclic redundancy check
1907:Film sound production
1822:Windows Media Encoder
1532:Windows Media Encoder
1154:GNOME Archive Manager
562:Both the now-defunct
1242:(decompression only)
1236:(decompression only)
1230:(decompression only)
1186:(decompression only)
479:and/or application.
1886:compression formats
1882:compression methods
1792:Schrödinger (Dirac)
576:
394:backward compatible
375:-encoded material.
326:vector quantization
273:exponent strategies
28:
1927:Dolby Laboratories
1777:Helix DNA Producer
1475:Helix DNA Producer
1458:Fraunhofer FDK AAC
980:Dolby Surround 7.1
945:Dolby Digital Plus
906:Dolby Laboratories
574:
538:digital television
345:Spectral extension
100:Dolby Digital Plus
55:Dolby Laboratories
27:Dolby Digital Plus
1894:
1893:
1872:
1871:
1830:
1829:
1598:
1597:
1420:
1419:
1332:
1331:
1063:
1062:
685:
684:
476:
475:
153:Technical details
97:
96:
1934:
1628:
1619:
1615:
1441:
1437:
1343:
1234:StuffIt Expander
1122:
1118:
1097:Data compression
1090:
1083:
1076:
1067:
899:
892:
885:
876:
869:
868:
866:
865:
851:
845:
844:
842:
836:. Archived from
831:
822:
816:
815:
814:
812:
806:
796:
790:
789:
787:
776:
577:
430:
102:, also known as
89:
82:
75:
61:Encoding formats
46:
36:
29:
1944:
1943:
1937:
1936:
1935:
1933:
1932:
1931:
1897:
1896:
1895:
1890:
1868:
1826:
1745:
1722:
1669:
1609:
1608:
1605:
1594:
1536:
1431:
1430:
1427:
1416:
1402:
1338:
1328:
1299:PKZIP/SecureZIP
1279:Archive Utility
1255:
1204:
1112:
1111:
1109:
1100:
1094:
1064:
1059:
1043:
1027:
999:
955:Dolby Headphone
908:
903:
873:
872:
863:
861:
853:
852:
848:
840:
829:
824:
823:
819:
810:
808:
804:
798:
797:
793:
785:
778:
777:
773:
768:
756:
698:
671:
666:
661:
560:
554:
530:
513:
494:
489:
418:
412:
390:
381:
368:
362:
353:
347:
334:
317:
305:psycho-acoustic
297:
285:
262:
218:
182:
160:
155:
93:
44:
24:
17:
12:
11:
5:
1942:
1941:
1938:
1930:
1929:
1924:
1919:
1914:
1909:
1899:
1898:
1892:
1891:
1889:
1888:
1877:
1874:
1873:
1870:
1869:
1867:
1866:
1861:
1856:
1851:
1846:
1840:
1838:
1832:
1831:
1828:
1827:
1825:
1824:
1819:
1814:
1809:
1804:
1799:
1794:
1789:
1784:
1779:
1774:
1769:
1764:
1759:
1753:
1751:
1747:
1746:
1744:
1743:
1738:
1732:
1730:
1724:
1723:
1721:
1720:
1715:
1710:
1705:
1700:
1695:
1690:
1685:
1679:
1677:
1671:
1670:
1668:
1667:
1662:
1657:
1652:
1647:
1642:
1636:
1634:
1625:
1616:
1600:
1599:
1596:
1595:
1593:
1592:
1587:
1582:
1577:
1572:
1567:
1565:Monkey's Audio
1562:
1557:
1552:
1546:
1544:
1538:
1537:
1535:
1534:
1529:
1524:
1519:
1514:
1509:
1504:
1499:
1494:
1493:
1492:
1487:
1477:
1472:
1471:
1470:
1465:
1463:Nero AAC Codec
1460:
1449:
1447:
1438:
1422:
1421:
1418:
1417:
1412:
1410:
1404:
1403:
1401:
1400:
1395:
1390:
1385:
1380:
1375:
1370:
1365:
1360:
1355:
1349:
1347:
1340:
1334:
1333:
1330:
1329:
1327:
1326:
1321:
1316:
1311:
1306:
1301:
1296:
1291:
1286:
1281:
1276:
1271:
1265:
1263:
1257:
1256:
1254:
1253:
1248:
1243:
1240:The Unarchiver
1237:
1231:
1225:
1220:
1214:
1212:
1206:
1205:
1203:
1202:
1197:
1192:
1187:
1181:
1176:
1171:
1166:
1161:
1156:
1151:
1146:
1141:
1136:
1130:
1128:
1119:
1102:
1101:
1095:
1093:
1092:
1085:
1078:
1070:
1061:
1060:
1058:
1057:
1051:
1049:
1045:
1044:
1042:
1041:
1035:
1033:
1029:
1028:
1026:
1025:
1020:
1015:
1009:
1007:
1001:
1000:
998:
997:
992:
987:
982:
977:
972:
967:
962:
957:
952:
947:
942:
937:
932:
927:
922:
916:
914:
910:
909:
904:
902:
901:
894:
887:
879:
871:
870:
846:
843:on 2016-11-19.
817:
791:
770:
769:
767:
764:
763:
762:
755:
752:
744:
743:
731:
720:
719:
716:
697:
694:
683:
682:
679:
676:
673:
668:
663:
658:
654:
653:
650:
647:
644:
641:
638:
635:
631:
630:
627:
624:
621:
618:
615:
612:
608:
607:
604:
601:
598:
595:
592:
588:
587:
584:
581:
556:Main article:
553:
550:
529:
526:
512:
509:
493:
490:
488:
485:
474:
473:
470:
467:
463:
462:
459:
456:
452:
451:
448:
445:
441:
440:
437:
434:
417:
414:
389:
386:
380:
377:
373:Dolby Surround
361:
358:
346:
343:
333:
330:
316:
313:
296:
293:
284:
281:
261:
258:
257:
256:
249:
245:
238:
234:
217:
214:
202:
201:
197:
194:
181:
178:
177:
176:
173:
170:
167:
159:
158:Specifications
156:
154:
151:
136:audio channels
95:
94:
92:
91:
84:
77:
69:
66:
65:
62:
58:
57:
52:
48:
47:
42:
38:
37:
15:
13:
10:
9:
6:
4:
3:
2:
1940:
1939:
1928:
1925:
1923:
1920:
1918:
1915:
1913:
1912:Digital audio
1910:
1908:
1905:
1904:
1902:
1887:
1883:
1879:
1878:
1875:
1865:
1862:
1860:
1857:
1855:
1852:
1850:
1847:
1845:
1842:
1841:
1839:
1837:
1833:
1823:
1820:
1818:
1815:
1813:
1810:
1808:
1805:
1803:
1800:
1798:
1795:
1793:
1790:
1788:
1785:
1783:
1780:
1778:
1775:
1773:
1770:
1768:
1765:
1763:
1760:
1758:
1755:
1754:
1752:
1748:
1742:
1739:
1737:
1734:
1733:
1731:
1729:
1725:
1719:
1716:
1714:
1711:
1709:
1706:
1704:
1701:
1699:
1696:
1694:
1691:
1689:
1686:
1684:
1681:
1680:
1678:
1676:
1672:
1666:
1663:
1661:
1658:
1656:
1653:
1651:
1648:
1646:
1643:
1641:
1638:
1637:
1635:
1633:
1629:
1626:
1624:
1620:
1617:
1613:
1607:
1601:
1591:
1588:
1586:
1583:
1581:
1578:
1576:
1573:
1571:
1568:
1566:
1563:
1561:
1558:
1556:
1553:
1551:
1548:
1547:
1545:
1543:
1539:
1533:
1530:
1528:
1525:
1523:
1520:
1518:
1515:
1513:
1510:
1508:
1505:
1503:
1500:
1498:
1495:
1491:
1488:
1486:
1483:
1482:
1481:
1478:
1476:
1473:
1469:
1466:
1464:
1461:
1459:
1456:
1455:
1454:
1451:
1450:
1448:
1446:
1442:
1439:
1435:
1429:
1423:
1415:
1411:
1409:
1405:
1399:
1396:
1394:
1391:
1389:
1386:
1384:
1381:
1379:
1376:
1374:
1371:
1369:
1366:
1364:
1361:
1359:
1356:
1354:
1351:
1350:
1348:
1344:
1341:
1337:Non-archiving
1335:
1325:
1322:
1320:
1317:
1315:
1312:
1310:
1307:
1305:
1304:PowerArchiver
1302:
1300:
1297:
1295:
1292:
1290:
1287:
1285:
1282:
1280:
1277:
1275:
1272:
1270:
1267:
1266:
1264:
1262:
1258:
1252:
1249:
1247:
1244:
1241:
1238:
1235:
1232:
1229:
1226:
1224:
1221:
1219:
1216:
1215:
1213:
1211:
1207:
1201:
1198:
1196:
1193:
1191:
1188:
1185:
1182:
1180:
1177:
1175:
1172:
1170:
1167:
1165:
1162:
1160:
1157:
1155:
1152:
1150:
1147:
1145:
1142:
1140:
1137:
1135:
1132:
1131:
1129:
1127:
1126:Free software
1123:
1120:
1116:
1107:
1103:
1098:
1091:
1086:
1084:
1079:
1077:
1072:
1071:
1068:
1056:
1055:Dolby Theatre
1053:
1052:
1050:
1046:
1040:
1037:
1036:
1034:
1030:
1024:
1021:
1019:
1016:
1014:
1011:
1010:
1008:
1006:
1002:
996:
993:
991:
988:
986:
983:
981:
978:
976:
973:
971:
968:
966:
963:
961:
958:
956:
953:
951:
948:
946:
943:
941:
940:Dolby Digital
938:
936:
933:
931:
928:
926:
923:
921:
918:
917:
915:
911:
907:
900:
895:
893:
888:
886:
881:
880:
877:
860:
856:
850:
847:
839:
835:
828:
821:
818:
803:
802:
795:
792:
784:
783:
775:
772:
765:
761:
758:
757:
753:
751:
749:
741:
736:
732:
729:
726:
725:
724:
717:
714:
710:
709:
708:
705:
703:
695:
693:
689:
680:
677:
674:
669:
664:
659:
656:
652:1.664 Mbit/s
651:
648:
645:
642:
639:
636:
633:
628:
625:
622:
619:
616:
613:
610:
605:
602:
599:
596:
593:
590:
589:
586:Blu-ray Disc
578:
572:
569:
566:standard and
565:
559:
551:
549:
545:
541:
539:
535:
527:
525:
523:
518:
510:
508:
505:
501:
499:
491:
486:
484:
480:
471:
468:
465:
464:
460:
457:
454:
453:
449:
446:
443:
442:
438:
435:
432:
431:
428:
425:
422:
415:
413:
410:
407:
402:
399:
398:Dolby Digital
395:
387:
385:
378:
376:
374:
367:
359:
357:
352:
344:
342:
338:
331:
329:
327:
323:
314:
312:
310:
306:
302:
294:
292:
290:
282:
280:
276:
274:
269:
267:
259:
254:
250:
246:
243:
239:
235:
232:
231:
230:
227:
222:
215:
213:
210:
206:
198:
195:
191:
190:
189:
187:
179:
174:
171:
168:
165:
164:
163:
157:
152:
150:
148:
143:
141:
137:
133:
132:Dolby Digital
129:
126:developed by
125:
121:
117:
113:
109:
105:
104:Enhanced AC-3
101:
90:
85:
83:
78:
76:
71:
70:
67:
63:
59:
56:
53:
49:
43:
39:
35:
30:
22:
1917:Audio codecs
1859:MSU Lossless
1703:Nero Digital
1650:Nero Digital
1164:KGB Archiver
990:Dolby Vision
985:Dolby TrueHD
975:Dolby Stereo
944:
935:Dolby Cinema
862:. Retrieved
858:
849:
838:the original
833:
820:
811:21 September
809:, retrieved
800:
794:
781:
774:
745:
728:Blu-ray Disc
721:
706:
699:
690:
686:
681:18.0 Mbit/s
643:3.024 Mbit/s
568:Blu-ray Disc
561:
546:
542:
531:
514:
506:
502:
495:
481:
477:
439:Application
426:
423:
419:
411:
403:
396:with legacy
391:
382:
369:
366:Joint stereo
354:
339:
335:
318:
298:
286:
277:
272:
270:
263:
225:
223:
219:
211:
207:
203:
185:
183:
161:
149:TS 102 366.
144:
119:
115:
111:
107:
103:
99:
98:
1606:compression
1428:compression
1339:compressors
1110:compression
1005:Doremi Labs
995:Dolby Voice
920:Dolby Atmos
672:18.0 Mbit/s
670:18.0 Mbit/s
629:640 kbit/s
406:Dolby Atmos
360:Rematrixing
289:coding gain
244:are packed.
41:MIME / IANA
16:Audio codec
1901:Categories
1880:See also:
1787:libavcodec
1632:MPEG-4 ASP
1612:comparison
1560:libavcodec
1502:libavcodec
1434:comparison
1261:Commercial
1115:comparison
1023:CinePlayer
1018:CineExport
864:2019-06-10
766:References
748:downmixing
649:6.1 to 7.1
620:448 kbit/s
364:See also:
349:See also:
186:substreams
128:Dolby Labs
51:Created by
45:audio/eac3
1812:libtheora
1713:QuickTime
1575:OptimFROG
1527:libvorbis
1294:MacBinary
1289:BetterZip
1251:ZipGenius
1190:Xarchiver
1106:Archivers
1039:Ray Dolby
1013:CineAsset
740:DTS audio
713:PCM audio
660:mandatory
637:mandatory
623:mandatory
614:mandatory
404:However,
309:mantissas
283:Algorithm
242:mantissas
226:syncframe
180:Structure
1854:Lagarith
1836:Lossless
1802:Sorenson
1757:CineForm
1708:OpenH264
1688:Blu-code
1542:Lossless
1522:Musepack
1517:libspeex
1408:For code
1393:XZ Utils
1358:compress
1210:Freeware
1159:Info-ZIP
1144:Expander
1099:software
970:Dolby SR
930:Dolby 3D
925:Dialnorm
754:See also
675:optional
662:optional
640:1 to 7.1
626:1 to 5.1
617:1 to 5.1
606:Bitrate
603:Channels
600:Decoding
597:Bitrate
594:Channels
591:Decoding
469:−11 LKFS
466:Portable
458:−20 LKFS
447:−31 LKFS
332:Coupling
248:channel.
237:downmix.
122:), is a
21:Bra size
1849:Huffyuv
1762:Cinepak
1683:CoreAVC
1585:WavPack
1580:Shorten
1512:libopus
1507:libcelt
1497:TooLAME
1346:Generic
1309:StuffIt
1149:FreeArc
950:Dolby E
665:1 or 2
657:TrueHD
634:E-AC-3
583:HD DVD
522:Dolby E
515:As the
1817:libvpx
1750:Others
1698:FFmpeg
1655:FFmpeg
1570:mp4als
1388:Snappy
1324:WinZip
1319:WinRAR
1314:WinAce
1246:TUGZip
1218:Filzip
1179:PeaZip
1032:People
859:GitHub
735:HD DVD
702:S/PDIF
678:1 to 8
667:3 to 8
580:Codec
564:HD DVD
498:S/PDIF
216:Syntax
140:Mbit/s
116:E-AC-3
1782:Indeo
1772:DNxHD
1767:Daala
1675:H.264
1623:Lossy
1604:Video
1485:l3enc
1445:Lossy
1426:Audio
1353:bzip2
1274:ALZip
1228:Lhasa
1195:Zipeg
1134:7-Zip
1048:Other
841:(PDF)
830:(PDF)
805:(PDF)
786:(PDF)
611:AC-3
517:AES-3
64:E-AC3
1884:and
1864:YULS
1844:FFV1
1741:x265
1736:DivX
1728:HEVC
1718:x264
1693:DivX
1665:Xvid
1660:HDX4
1645:DivX
1640:3ivx
1590:L2HC
1555:FLAC
1550:ALAC
1490:LAME
1468:FAAC
1398:zstd
1383:rzip
1378:pack
1373:lzop
1368:lzip
1363:gzip
1200:ZPAQ
1108:with
813:2023
444:Line
433:Mode
147:ETSI
120:EC-3
1807:VP7
1797:SBC
1480:MP3
1453:AAC
1414:UPX
1284:ARJ
1269:ARC
1223:LHA
1184:XAD
1174:pax
1169:PAQ
1139:Ark
118:or
112:DD+
108:DDP
1903::
857:.
832:.
455:RF
142:.
114:,
110:,
1614:)
1610:(
1436:)
1432:(
1117:)
1113:(
1089:e
1082:t
1075:v
898:e
891:t
884:v
867:.
88:e
81:t
74:v
23:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
