Name of this element

audioChannelFormat/audioBlockFormat

Description

An audioBlockFormat represents a single sequence of audioChannelFormat samples with fixed parameters, including position, within a specified time interval

Source

ITU-R BS.2076 (ADM)

List of fields with at least one check

audioBlockFormatID: (Attribute) ID for block
rtime: (Attribute) Start time of block
duration: (Attribute) Duration of block
lstart: (Attribute)
lduration: (Attribute) (S-ADM) Duration of block in the S-ADM metadata frame
initializeBlock: (Attribute) (S-ADM) If the initializeBlock is set to ‘1’, it indicates the audioBlockFormat of ‘AB_xxxxyyyy_00000000’ is used to specify initial values of all elements for the first audio block in the frame
gain: Definition of a gain value to be applied to all audio samples corresponding to the audioBlockFormat
importance: Importance of the audioChannelFormat, defined for the duration of the current audioBlockFormat
headLocked: Indicates if the perceived location of the audio element is locked to the head or not locked
headphoneVirtualise: Specifies whether the object should be virtualised using a headphone virtualiser or not
speakerLabel: A reference to the label of the speaker position
position: Exact location of sound
outputChannelFormatIDRef: (Matrix) For defining a decoding or direct matrix, this is the output audioChannelFormat that defines the channel being decoded to
outputChannelIDRef,: (Only in legacy files)
jumpPosition: (Matrix, Objects) If jumpPosition is set to 1 the position will change instantly from the previous block’s position. If set to 0 then interpolation of the position will take the entire length of the block
matrix: (Matrix) Matrix
coefficient: (Matrix) Multiplication factor of another channel
width: (Objects) horizontal extent
depth: (Objects) vertical extent
height: (Objects) distance extent
cartesian: Specifies coordinate system
diffuse: Describes the diffuseness of an audioObject (if it is diffuse or direct sound)
channelLock: If set to 1 a renderer can lock the object to the nearest channel or speaker, rather than normal rendering
objectDivergence: Adjusts the balance between the object’s specified position and two other positions specified by the azimuthRange value
zoneExclusion: Indicates which speaker/room zones the object should not be rendered through
equation: (HOA) An equation to describe the HOA component
order: (HOA) Order of the HOA component
degree: (HOA) Degree of the HOA component
normalization: (HOA) Indicates the normalization scheme of the HOA component (N3D, SN3D, FuMa)
nfcRefDist: (HOA) Indicates the reference distance of the loudspeaker setup for near-field compensation (NFC)
screenRef: (Objects, HOA) Indicates whether the object is screen-related or not

List of checks involving this element

(element name) element is not part of specs
(attribute name) attribute is not present (extra spec name if needed)
(attribute name) attribute is present (extra spec name if needed) (Dolby Atmos Master ADM Profile addition)
(element name) element is not present (extra spec name if needed)
(element name) element is present (extra spec name if needed) (Dolby Atmos Master ADM Profile addition)
(subelement name) subelement count (subelement count) is not permitted, (min or max) is (max count) (extra spec name if needed) (Dolby Atmos Master ADM Profile addition)
(element name) (topic name) value (actual value) is not permitted, permitted value(permitted values) (extra spec name if needed)
(element name) value (element value) shall match the (target attribue name) attribute of a(target element name) element
(element name) value (element value) shall be unique
(attribute name) attribute with (substring) value (attribute value) not same as (attribute name) attribute (substring) value (attribute value) (extra spec name if needed) (Dolby Atmos Master ADM Profile addition)
(attribute name) attribute with (substring) value (attribute value) not same as (attribute name) attribute (substring) value (attribute value)
(element name) element value (element value) does not match corresponding(element name) element value (element value) (extra spec name if needed)
(element names) elements are not all present (extra spec name if needed) (Dolby Atmos Master ADM Profile addition)
(element names) element values are not same (extra spec name if needed) (Dolby Atmos Master ADM Profile addition)