1、 Table 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 Annex A Bibliography Foreword SMPTE (Society of Motion Picture and Television Engineers) is an internationally-recognize
2、d 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, recommended practices, and engineering guidelines are prepared by SMPTEs technology committ
3、ees. 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 documents are drafted in accordance with the rules given in Section XIII of its Admini
4、strative 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 into account historical practice and standards work of both SMPTE and ITU. Current syst
5、ems 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 identification and location of channels. This will allow uniform expression and commu
6、nication 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 428-3-2006Copyright 2006 by THE SOCIETY OF MOTION PICTURE AND TELEVISION ENGINEERS 3 Barker Avenue, Whit
7、e Plains, NY 10601 (914) 761-1100 Approved September 29, 2006 SMPTE STANDARD D-Cinema Distribution Master Audio Channel Mapping and Channel Labeling SMPTE 428-3-2006 Page 2 of 9 pages track nor to specify that all channels described herein will be used. It is quite likely however that additional cha
8、nnels 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 Normative reference The following document contains provisions which, through reference in this text, constitute provisions of this recomm
9、ended 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 are encouraged to investigate the possibility of applying the most recent edition of the document indicated below. AES3-2003, AES Recom
10、mended Practice for Digital Audio Engineering Serial Transmission Format Two-Channel Linearly Represented Digital Audio Data (Revision of AES3-1992) 3 Definition of terms Left: A loudspeaker position behind the screen to the far left edge, horizontally, of the screen center as viewed from the seatin
11、g 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 position behind the screen to the far right edge, horizontally, of the screen center as viewed from the seating area. LFE screen: A band
12、-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 loudspeakers positioned along the left side of the room starting approximately 1/3 of the distance from the screen to the back wall. Right surround
13、: 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: A loudspeaker(s) position on the back wall of the room centered horizontally. Left center: A loudspeaker position mid-way between the c
14、enter 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. LFE 2: A band-limited low frequency only loudspeaker. Vertical height front: A loudspeaker(s) position at the vertical top of the scree
15、n. 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 right center horizontal positions. Tri-channel may be positioned at the vertical top of the screen in the left, center and right horizon
16、tal 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 area. Left wide: A loudspeaker position outside the screen area far left front in the room. Right wide: A loudspeaker position outside th
17、e screen area far right front in the room. SMPTE 428-3-2006 Page 3 of 9 pages Rear surround left: A loudspeaker position 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
18、loudspeaker position on the left wall for localization as opposed to the diffuse array. Right surround direct: A 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 impa
19、ired. Narration: A dedicated narration channel describing the films events for the visually impaired. Lt/Rt: Lt/Rt 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
20、: A single audio channel reproduced through the center speaker position. Dialog centric mix: A mix in which the dialog 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 A
21、ES3 carriage is not mandated, however if used the AES3 pairs and channel one or two in the pair shall be mapped in 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
22、 not format names. 4.1 Nine 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 loudspeaker 2/2 4 LFE/Screen Screen low frequency effects subwoofer loudspeakers 3/1 5 Ls/Le
23、ft 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 loudspeaker 5/1 9 Cs/ Center surround Rear wall surround loudspeakers 5/2 10 SMPTE reserved
24、 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 definedSMPTE 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 r
25、ight 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/Left center Mid left to center screen loudspe
26、aker 4/2 8 Rc/Right center Mid right to center screen loudspeaker 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 defined4.3 Seven channel AES Pair No. / Ch No. Channel No. Label / Name Descrip
27、tion 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 Rs/Right surround Right wall surround lo
28、udspeakers 4/1 7 Unused 4/2 8 Unused5/1 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 16 User definedSMPTE 428-3-2006 Page 5 of 9 pages 4.4 Six channel AES Pai
29、r 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 loudspeaker 2/2 4 LFE/Screen Screen low frequency effects subwoofer loudspeakers 3/1 5 Ls/Left surround Left wall surround loudspeakers
30、 3/2 6 Rs/Right surround Right wall surround loudspeakers 4/1 7 Unused 4/2 8 Unused5/1 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 defined4.5 Four channel AES Pair No. / Ch No. Channel No. Labe
31、l / 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 Unused Unused 3/1 5 S/Surround Mono surround to all surround loudspeakers 3/2 6 Unused 4/1 7 Unused4/2 8 Unused 5/1 9 Unused5/2 10 SMPTE reserved 6/
32、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 definedSMPTE 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 encoded left 1/2 2 Rt Matrix encoded right 2/1 3
33、Unused 2/2 4 Unused3/1 5 Unused 3/2 6 Unused4/1 7 Unused 4/2 8 Unused5/1 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 defined4.7 One channel AES Pair No. / Ch No. Channel No. Label / Name Descri
34、ption 1/1 1 Unused 1/2 2 Unused2/1 3 Mono Single channel center channel 2/2 4 Unused 3/1 5 Unused3/2 6 Unused 4/1 7 Unused4/2 8 Unused 5/1 9 Unused5/2 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 definedSMPT
35、E 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 Ce
36、nter of the theatre ceiling loudspeakers Left wide Lw Outside the screen, front left loudspeaker Right wide Rw Outside the screen, front right loudspeaker Left surround direct Lsd Left surround single loudspeaker for localized directionality Right surround direct Rsd Right surround single loudspeake
37、r for localized directionality LFE 2 Lfe2 Low frequency effects subwoofer style loudspeaker Rear surround left Rls Rear wall left loudspeaker/s Rear surround right Rrs Rear wall right loudspeaker/s Hearing impaired HI Dynamic range compressed dialog centric mix for the hearing iidNarration VI-N Narr
38、ation for the visually impaired SMPTE 428-3-2006 Page 8 of 9 pages 6 Informative diagram SMPTE 428-3-2006 Page 9 of 9 pages Annex A (informative) Bibliography AES31-1-2001, AES Standard for Network and File Transfer of Audio Audio-File Transfer and Exchange Part 1: Disk Format AES31-3-1999, AES Stan
39、dard for Network and File Transfer of Audio Audio-File Transfer and Exchange Part 3: Simple Project Interchange SMPTE RP 173-2002, Loudspeaker Placements for Audio Monitoring in High-Definition Electronic Production SMPTE EG 32-1996, Emphasis of AES/EBU Audio in Television Systems and Preferred Audio Sampling Rate ITU-R BR.1384 (12/98), Parameters for International Exchange of Multi-Channel Sound Recordings
