OpenMIC Metadata Guide

Source Metadata


Last updated: May 5th, 2009
Name
soundQualities
Group Label
Sound Qualities
Schema
rulib
Definition
Sound Qualities is a parent element for six subelements (some with their own subelements and attributes). Not all elements are used for all source types. These elements describe the characteristics of the sound, such as mono or stereo, track layout, etc.:
Channels
Track Medium
Track Layout
Sound Field
Noise Reduction
Equalization
Repeatable
N
Name
soundQualitiesChannels
Label
not applicable; does not appear on form
Schema
rulib
Definition
Channels is a parent element for two subelements: Number of Channels, and Channel Assignment. Channel Assignment has three attributes: Channel Number, Left-Right Position, and Front-Rear Position. The Channels elements describe the audio streams present on the resource, such as the number and position of channels.
Repeatable
Y
Name
soundQualitiesChannelsNumChannels
Label
Sound Qualities - Number of Channels
Schema
AES 4.4.15.3.3 (numChannels)
Definition
The number of audio streams present in the resource.
Format
Arabic numeral; non-negative integer between 1 and 48.
Example(s)
2
Repeatable
N
Name
soundQualitiesChannelsChannelAssignment
Label
not applicable; does not appear on form
Schema
AES 4.4.16.3.6.2 (channelAssignment)
Definition
Channel Assignment is a parent element for three attributes: Channel Number, Left-Right Position, and Front-Rear Position. Channel Assignment shall be used to indicate the area of the audio sound stage occupied by the audio stream.
Repeatable
N
Name
soundQualitiesChannelsChannelNumber
Label
Sound Qualities - Channel (for Left-Right)
or
Sound Qualities - Channel (for Front-Rear)
Schema
AES 4.4.15.3.6.2.2 (channelNum)
Definition
A number assigned to a particular channel in order to map it to its position in the audio sound stage (e.g., pan position within the left-right axis). A natural numbering scheme should be applied to the channelNum attribute based on the described audio object. For example, when describing a 24-track tape, the first channelNum would be 1. In the case of digital file-based audio objects, the first channelNum should be 0.
Format
Arabic numeral; non-negative integer.
Example(s)
1
Repeatable
N
Name
soundQualitiesChannelsLeftRightPosition
Label
Sound Qualities - Left-Right Position
Schema
AES 4.4.15.3.6.2.3 (leftRightPosition)
Definition
The pan position within the audio sound stage that the stream should nominally occupy during audio playback within the left-right axis. For panning within a single left-right axis (such as in the case of stereo speakers), the position is specified by a linear displacement to the left or right. Positive values shall indicate a displacement to the right (where +100.0 is fully right); negative values shall indicate a displacement to the left (where -100.0 is fully left). A default value of 0.0 shall indicate that the audio is panned to the center. The "channelNumber" attribute allows the cataloger to correlate each pan position with its corresponding channel.
Format
Arabic numeral; decimal
Example(s)
-100.0
+100.0
Repeatable
N
Name
soundQualitiesChannelsFrontRearPosition
Label
Sound Qualities - Front-Rear Position
Schema
AES 4.4.15.3.6.2.4 (frontRearPosition)
Definition
A number indicating the pan position within the audio sound stage that the stream should nominally occupy during audio playback within the front-back axis. Front-to-rear position shall be specified by linear displacement from the front (0.0) to the rear (200.0). A default value of 0.0 shall indicate that the audio is panned to the front. The "channelNumber" attribute allows the cataloger to correlate each pan position with its corresponding channel.
Format
Arabic numeral; non-negative decimal
Example(s)
0.0
200.0
Repeatable
N
Name
soundQualitiesTrackMedium
Label
Sound Qualities - Track Medium
Schema
rulib
Definition
The type of sound found on the resource (optical, magnetic, digital, etc.)
Controlled Vocabulary
digital optical sound (SDDS, DTS, etc.); optical sound; optical sound (variable density); optical sound (single variable area); optical sound (dual variable area); optical sound (multiple variable area); optical sound (unilateral); magnetic sound; magnetic sound (single stripe); magnetic sound (three stripe); magnetic sound (full coat); magnetic optical; unknown; Other
Repeatable
Y
Name
soundQualitiesTrackLayout
Label
Sound Qualities - Track Layout
Schema
rulib
Definition
The format of the audio tracks.
Controlled Vocabulary
1 (full track); 2 (half track); 3; 4 (quarter track); 5; 6; 8; 12; 16; 24; 32; 48; Other
Repeatable
N
Name
soundQualitiesSoundField
Label
Sound Qualities - Sound Field
Schema
rulib
Definition
The aural space arrangement of the sound recording, such as mono or stereo.
Controlled Vocabulary
Film, Videotape, Videodisc, Audiotape, Optical disc, Analog disc. mono; stereo; joint stereo; quadrophonic; 5.1; 7.1; Other
Cylinder, Wire recording. mono
Repeatable
N
Name
soundQualitiesNoiseReduction
Label
Sound Qualities - Noise Reduction
Schema
rulib
Definition
Any inherent noise reduction processing that must be applied to the described audio object during playback to properly recover the recorded sound.
Controlled Vocabulary
Film, Videotape. Dolby A; Dolby SR; DBX Type I; DBX Type II; Ultra Stereo; unknown; Other
Videodisc; Audiotape. Dolby A; Dolby B; Dolby C; Dolby S; Dolby SR; DBX; flat; Other; none
Analog disc. Dolby A; DBX; flat; Other; none
Repeatable
N
Name
soundQualitiesEqualization
Label
Sound Qualities - Equalization
Schema
AES 4.4.16.4.12 (equalization)
Definition
Indicates any inherent equalization curve that must be applied to the described audio object during playback to properly recover the recorded sound.
Controlled Vocabulary
AES; NAB; RIAA; FFRR; FFSS; IECI; CCIR; Ortho Acoustic; flat (no curve)
Repeatable
N




 
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