1、 Reference number ISO 26428-3:2008(E) ISO 2008INTERNATIONAL STANDARD ISO 26428-3 First edition 2008-09-01 Digital cinema (D-cinema) distribution master Part 3: Audio channel mapping and channel labeling Souche de la distribution du cinma numrique (cinma D) Partie 3: Cartographie de la chane sonore e
2、t marquage de la chane sonore ISO 26428-3:2008(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer
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7、O 26428-3:2008(E) ISO 2008 All rights reserved iii Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Eac
8、h member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the Internation
9、al Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standard
10、s adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject o
11、f patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 26428-3 was prepared by the Society of Motion Picture and Television Engineers (as SMPTE 428-3-2006) and was adopted, under a special “fast-track procedure”, by Technical Committee ISO/TC 36, Cinema
12、tography, in parallel with its approval by the ISO member bodies. ISO 26428 consists of the following parts, under the general title Digital cinema (D-cinema) distribution master: Part 1: Image characteristics Part 2: Audio characteristics Part 3: Audio channel mapping and channel labeling ISO 26428
13、3:2008(E) iv ISO 2008 All rights reservedIntroduction This International Standard comprises SMPTE 428-3-2006 and the following informative note. Informative reference: The French national standard NF S27-100, Cinematography Electronic projection rooms of digital cinema type, provides additional reg
14、ional information. ISO 26428-3:2008(E) ISO 2008 All rights reserved 1Table of contents Foreword Introduction 1 Scope 2 Normative reference 3 Definition of terms 4 Channel maps and labels 5 Channel labels Supplemental channels 6 Information diagram (not to scale) Annex A Bibliography Foreword SMPTE (
15、Society of Motion Picture and Television Engineers) is an internationally-recognized standards- developing organization. Headquartered and incorporated in the United States of America, SMPTE has members in over 80 countries on six continents. SMPTEs engineering documents including standards, recomme
16、nded practices, and engineering guidelines are prepared by SMPTEs technology committees. Participation in these committees is open to all with a bona fide interest in their work. SMPTE cooperates closely with other standards-developing organizations, including ISO, IEC, and ITU. SMPTE engineering do
17、cuments are drafted in accordance with the rules given in Section XIII of its Administrative Practices. SMPTE 428-3 was prepared by the Committee on Digital Cinema Technology (DC28). Introduction This channel-mapping and labeling scheme is specific to digital cinema while at the same time taking int
18、o account historical practice and standards work of both SMPTE and ITU. Current systems and legacy systems were taken into account. 1 Scope This standard defines the mapping and labeling of channels for the Digital Cinema Distribution Master (DCDM) audio in a digital cinema audio system to aid the i
19、dentification and location of channels. This will allow uniform expression and communication of source audio channels to digital cinema playback loudspeakers. This standard is not intended to define the suitability of these channels for a particular sound Page 1 of 9 pages SMPTE 428-3-2006 Copyright
20、 2006 by THE SOCIETY OF MOTION PICTURE AND TELEVISION ENGINEERS 3 Barker Avenue, White Plains, NY 10601 (914) 761-1100 Approved September 29, 2006 SMPTE STANDARD D-Cinema Distribution Master Audio Channel Mapping and Channel Labeling ISO 26428-3:2008(E) 2 ISO 2008 All rights reservedSMPTE 428-3-2006
21、 Page 2 of 9 pages track nor to specify that all channels described herein will be used. It is quite likely however that additional channels will be used in future systems; these are therefore included in this standard as labels only. Channel maps define channel usage of common legacy systems. 2 Nor
22、mative reference The following document contains provisions which, through reference in this text, constitute provisions of this recommended practice. At the time of publication, the edition indicated was valid. All standards are subject to revision, and parties to agreements based on this practice
23、are encouraged to investigate the possibility of applying the most recent edition of the document indicated below. AES3-2003, AES Recommended Practice for Digital Audio Engineering Serial Transmission Format Two- Channel Linearly Represented Digital Audio Data (Revision of AES3-1992) 3 Definition of
24、 terms Left: A loudspeaker position behind the screen to the far left edge, horizontally, of the screen center as viewed from the seating area. Center: A loudspeaker position behind the screen corresponding to the horizontal center of the screen as viewed from the seating area. Right: A loudspeaker
25、position behind the screen to the far right edge, horizontally, of the screen center as viewed from the seating area. LFE screen: A band-limited low frequency only loudspeaker position at the screen end of the room. Also refered to as “the sub-woofer channel. “ Left surround: An array of loudspeaker
26、s positioned along the left side of the room starting approximately 1/3 of the distance from the screen to the back wall. Right surround: An array of loudspeakers positioned along the right side of the room starting approximately 1/3 of the distance from the screen to the back wall. Center surround:
27、 A loudspeaker(s) position on the back wall of the room centered horizontally. Left center: A loudspeaker position mid-way between the center of the screen and the left edge of the screen. Right center: A loudspeaker position mid-way between the center of the screen and the right edge of the screen.
28、 LFE 2: A band-limited low frequency only loudspeaker. Vertical height front: A loudspeaker(s) position at the vertical top of the screen. A single channel would be at the center of the screen horizontally. Dual channels may be positioned at the vertical top of the screen and in the left center and
29、right center horizontal positions. Tri-channel may be positioned at the vertical top of the screen in the left, center and right horizontal positions. Top center surround: A loudspeaker position in the center of the seating area in both the horizontal and vertical planes directly above the seating a
30、rea. Left wide: A loudspeaker position outside the screen area far left front in the room. Right wide: A loudspeaker position outside the screen area far right front in the room. ISO 26428-3:2008(E) ISO 2008 All rights reserved 3 SMPTE 428-3-2006 Page 3 of 9 pages Rear surround left: A loudspeaker p
31、osition on the back wall of the room to the left horizontally. Rear surround right: A loudspeaker position on the back wall of the room to the right horizontally. Left surround direct: A loudspeaker position on the left wall for localization as opposed to the diffuse array. Right surround direct: A
32、loudspeaker position on the right wall for localization as opposed to the diffuse array. Hearing impaired: A dedicated audio channel optimizing dialog intelligibility for the hearing impaired. Narration: A dedicated narration channel describing the films events for the visually impaired. Lt/Rt: Lt/R
33、t stands for left total and right total and is used to convey that four channels of audio have been matrix encoded into two channels. Subsequent decode would yield the four channels. Mono: A single audio channel reproduced through the center speaker position. Dialog centric mix: A mix in which the d
34、ialog is predominate and dynamic range compression may be employed. 4 Channel maps and labels Channel numbers listed refer to the input side of the DCDM audio process. Digital audio via AES3 carriage is not mandated, however if used the AES3 pairs and channel one or two in the pair shall be mapped i
35、n accordance with the tables below. Labels shall be retained throughout the audio chain. The channel maps and label tables that follow are titled by the number of channels and as such are not format names. 4.1 Nine channel AES Pair No. / Ch No. Channel No. Label / Name Description 1/1 1 L/Left Far l
36、eft screen loudspeaker 1/2 2 R/Right Far right screen loudspeaker 2/1 3 C/Center Center screen loudspeaker 2/2 4 LFE/Screen Screen low frequency effects subwoofer loudspeakers 3/1 5 Ls/Left surround Left wall surround loudspeakers 3/2 6 Rs/Right surround Right wall surround loudspeakers 4/1 7 Lc/Lef
37、t center Mid left to center screen loudspeaker 4/2 8 Rc/Right center Mid right to center screen loudspeaker 5/1 9 Cs/ Center surround Rear wall surround loudspeakers 5/2 10 SMPTE reserved 6/1 11 SMPTE reserved 6/2 12 SMPTE reserved 7/1 13 SMPTE reserved 7/2 14 SMPTE reserved 8/1 15 User defined 8/2
38、16 User defined ISO 26428-3:2008(E) 4 ISO 2008 All rights reservedSMPTE 428-3 -2006 Page 4 of 9 pages 4.2 Eight channel AES Pair No. / Ch No. Channel No. Label / Name Description 1/1 1 L/Left Far left screen loudspeaker 1/2 2 R/Right Far right screen loudspeaker 2/1 3 C/Center Center screen loudspea
39、ker 2/2 4 LFE/Screen Screen low frequency effects subwoofer loudspeakers 3/1 5 Ls/Left surround Left wall surround loudspeakers 3/2 6 Rs/Right surround Right wall surround loudspeakers 4/1 7 Lc/Left center Mid left to center screen loudspeaker 4/2 8 Rc/Right center Mid right to center screen loudspe
40、aker 5/1 9 Unused 5/2 10 SMPTE reserved 6/1 11 SMPTE reserved 6/2 12 SMPTE reserved 7/1 13 SMPTE reserved 7/2 14 SMPTE reserved 8/1 15 User defined 8/2 16 User defined 4.3 Seven channel AES Pair No. / Ch No. Channel No. Label / Name Description 1/1 1 L/Left Far left screen loudspeaker 1/2 2 R/Right
41、Far right screen loudspeaker 2/1 3 C/Center Center screen loudspeaker 2/2 4 LFE/Screen Screen low frequency effects subwoofer loudspeakers 3/1 5 Ls/Left surround Left wall surround loudspeakers 3/2 6 Rs/Right surround Right wall surround loudspeakers 4/1 7 Unused 4/2 8 Unused 5/1 9 Cs/Center surroun
42、d Rear wall surround loudspeakers 5/2 10 SMPTE reserved 6/1 11 SMPTE reserved 6/2 12 SMPTE reserved 7/1 13 SMPTE reserved 7/2 14 SMPTE reserved 8/1 15 User defined 8/2 16 User defined ISO 26428-3:2008(E) ISO 2008 All rights reserved 5 SMPTE 428-3-2006 Page 5 of 9 pages 4.4 Six channel AES Pair No. /
43、 Ch No. Channel No. Label / Name Description 1/1 1 L/Left Far left screen loudspeaker 1/2 2 R/Right Far right screen loudspeaker 2/1 3 C/Center Center screen loudspeaker 2/2 4 LFE/Screen Screen low frequency effects subwoofer loudspeakers 3/1 5 Ls/Left surround Left wall surround loudspeakers 3/2 6
44、Rs/Right surround Right wall surround loudspeakers 4/1 7 Unused 4/2 8 Unused 5/1 9 Unused 5/2 10 SMPTE reserved 6/1 11 SMPTE reserved 6/2 12 SMPTE reserved 7/1 13 SMPTE reserved 7/2 14 SMPTE reserved 8/1 15 User defined 8/2 16 User defined 4.5 Four channel AES Pair No. / Ch No. Channel No. Label / N
45、ame Description 1/1 1 L/Left Far left screen loudspeaker 1/2 2 R/Right Far right screen loudspeaker 2/1 3 C/Center Center screen loudspeaker 2/2 4 Unused Unused 3/1 5 S/Surround Mono surround to all surround loudspeakers 3/2 6 Unused 4/1 7 Unused 4/2 8 Unused 5/1 9 Unused 5/2 10 SMPTE reserved 6/1 1
46、1 SMPTE reserved 6/2 12 SMPTE reserved 7/1 13 SMPTE reserved 7/2 14 SMPTE reserved 8/1 15 User defined 8/2 16 User defined ISO 26428-3:2008(E) 6 ISO 2008 All rights reservedSMPTE 428-3-2006 Page 6 of 9 pages 4.6 Two channel AES Pair No. / Ch No. Channel No. Label / Name Description 1/1 1 Lt Matrix e
47、ncoded left 1/2 2 Rt Matrix encoded right 2/1 3 Unused 2/2 4 Unused 3/1 5 Unused 3/2 6 Unused 4/1 7 Unused 4/2 8 Unused 5/1 9 Unused 5/2 10 SMPTE reserved 6/1 11 SMPTE reserved 6/2 12 SMPTE reserved 7/1 13 SMPTE reserved 7/2 14 SMPTE reserved 8/1 15 User defined 8/2 16 User defined 4.7 One channel A
48、ES Pair No. / Ch No. Channel No. Label / Name Description 1/1 1 Unused 1/2 2 Unused 2/1 3 Mono Single channel center channel 2/2 4 Unused 3/1 5 Unused 3/2 6 Unused 4/1 7 Unused 4/2 8 Unused 5/1 9 Unused 5/2 10 SMPTE reserved 6/1 11 SMPTE reserved 6/2 12 SMPTE reserved 7/1 13 SMPTE reserved 7/2 14 SM
49、PTE reserved 8/1 15 User defined 8/2 16 User defined ISO 26428-3:2008(E) ISO 2008 All rights reserved 7 SMPTE 428-3-2006 Page 7 of 9 pages 5 Channel labels Supplemental channels Name Label Description Vertical height left Vhl Far left top of screen loudspeaker Vertical height center Vhc Center top of screen loudspeaker Vertical height right Vhr Far right top of screen loudspeaker Top center surround Ts Center of the theatre ceiling loudspeakers Left wide Lw Outside the screen, front left loudspeaker Right w
