MultiSpeakerBRIR

From Sofaconventions
Jump to: navigation, search

Description

MultiSpeakerBRIR-0.3.png

This conventions was developed for binaural room impulse responses (BRIRs) measured in a multispeaker setup (=multiple emitters). It is based on SimpleFreeFieldHRIR with the most striking difference of using the FIRE as DataType. This allows to more compactly describe the data for all involved emitters.

Version 0.3

This version uses SOFA 1.0 which reflects the standard AES69-2015.


Name Default Flags Dimensions Type Comment
GLOBAL:Conventions SOFA rm attribute
GLOBAL:Version 1.0 rm attribute
GLOBAL:SOFAConventions MultiSpeakerBRIR rm attribute This convention is for BRIRs recorded in reverberant conditions from multiple loudspeaker sources at a number of listener orientations.
GLOBAL:SOFAConventionsVersion 0.3 rm attribute
GLOBAL:APIName rm attribute
GLOBAL:APIVersion rm attribute
GLOBAL:ApplicationName attribute
GLOBAL:ApplicationVersion attribute
GLOBAL:AuthorContact m attribute
GLOBAL:Comment m attribute
GLOBAL:DataType FIRE rm attribute We use FIR datatype which in addition depends on Emitters (E)
GLOBAL:History attribute
GLOBAL:License No license provided, ask the author for permission m attribute
GLOBAL:Organization m attribute
GLOBAL:References attribute
GLOBAL:RoomType reverberant m attribute
GLOBAL:Origin attribute
GLOBAL:DateCreated m attribute
GLOBAL:DateModified m attribute
GLOBAL:Title m attribute
ListenerPosition [0 0 0] m IC, MC double
ListenerPosition:Type cartesian m attribute
ListenerPosition:Units metre m attribute
ReceiverPosition [0 0.09 0; 0 -0.09 0] m rCI, rCM double
ReceiverPosition:Type cartesian m attribute
ReceiverPosition:Units metre m attribute
SourcePosition [0 0 1] m IC, MC double
SourcePosition:Type spherical m attribute
SourcePosition:Units degree, degree, metre m attribute
EmitterPosition [0 0 0] m eCI, eCM double Each speaker is represented as an emitter. Use EmitterPosition to represent the position of a particular speaker. Size of EmitterPosition determines E
EmitterPosition:Type cartesian m attribute
EmitterPosition:Units metre m attribute
GLOBAL:DatabaseName m attribute name of the database to which these data belong
GLOBAL:ListenerShortName m attribute ID of the subject from the database
GLOBAL:RoomDescription attribute narrative description of the room
ListenerUp [0 0 1] m IC, MC double
ListenerView [1 0 0] m IC, MC double
ListenerView:Type cartesian m attribute
ListenerView:Units metre m attribute
EmitterUp [0 0 1] ECI, ECM double When EmitterUp provided, EmitterView must be provided as well
EmitterView [1 0 0] ECI, ECM double When EmitterView provided, EmitterUp must be provided as well
EmitterView:Type cartesian attribute
EmitterView:Units metre attribute
Data.IR [1 1] m mREn double
Data.SamplingRate 48000 m I double
Data.SamplingRate:Units hertz m attribute
Data.Delay [0 0] m IRE, MRE double

Old deprecated versions

Version 0.2

In this version, we explicitly use the Datatype FIRE.

Name Default Flags Dimensions Type Comment
GLOBAL:Conventions SOFA rm attribute
GLOBAL:Version 0.6 rm attribute
GLOBAL:SOFAConventions MultiSpeakerBRIR rm attribute This convention is for BRIRs recorded in reverberant conditions from multiple loudspeaker sources at a number of listener orientations.
GLOBAL:SOFAConventionsVersion 0.2 rm attribute
GLOBAL:APIName rm attribute
GLOBAL:APIVersion rm attribute
GLOBAL:ApplicationName attribute
GLOBAL:ApplicationVersion attribute
GLOBAL:AuthorContact m attribute
GLOBAL:Comment m attribute
GLOBAL:DataType FIRE rm attribute We use FIR datatype which in addition depends on Emitters (E)
GLOBAL:History attribute
GLOBAL:License No license provided, ask the author for permission m attribute
GLOBAL:Organization m attribute
GLOBAL:References attribute
GLOBAL:RoomType reverberant m attribute
GLOBAL:Origin attribute
GLOBAL:DateCreated m attribute
GLOBAL:DateModified m attribute
GLOBAL:Title m attribute
ListenerPosition [0 0 0] m IC, MC double
ListenerPosition:Type cartesian m attribute
ListenerPosition:Units meter m attribute
ReceiverPosition [0 0.09 0; 0 -0.09 0] m rCI, rCM double
ReceiverPosition:Type cartesian m attribute
ReceiverPosition:Units meter m attribute
SourcePosition [0 0 1] m IC, MC double
SourcePosition:Type spherical m attribute
SourcePosition:Units degree, degree, meter m attribute
EmitterPosition [0 0 0] m eCI, eCM double Each speaker is represented as an emitter. Use EmitterPosition to represent the position of a particular speaker. Size of EmitterPosition determines E
EmitterPosition:Type cartesian m attribute
EmitterPosition:Units meter m attribute
GLOBAL:DatabaseName m attribute name of the database to which these data belong
GLOBAL:ListenerShortName m attribute ID of the subject from the database
GLOBAL:RoomDescription attribute narrative description of the room
ListenerUp [0 0 1] m IC, MC double
ListenerView [1 0 0] m IC, MC double
ListenerView:Type cartesian m attribute
ListenerView:Units meter m attribute
EmitterUp [0 0 1] ECI, ECM double When EmitterUp provided, EmitterView must be provided as well
EmitterView [1 0 0] ECI, ECM double When EmitterView provided, EmitterUp must be provided as well
EmitterView:Type cartesian attribute
EmitterView:Units meter attribute
Data.IR [1 1] m mREn double
Data.SamplingRate 48000 m I double
Data.SamplingRate:Units hertz m attribute
Data.Delay [0 0] m IRE, MRE double


Version 0.1

This was the first version, it used FIR datatype which was inofficially extended by E. Also, the comment said that EmitterPosition determines the size of E, which is deprecated as well.

Name Default Flags Dimensions Type Comment
GLOBAL:Conventions SOFA rm attribute
GLOBAL:Version 0.6 rm attribute
GLOBAL:SOFAConventions MultiSpeakerBRIR rm attribute This convention is for BRIRs recorded in reverberant conditions from multiple loudspeaker sources at a number of listener orientations.
GLOBAL:SOFAConventionsVersion 0.1 rm attribute
GLOBAL:APIName rm attribute
GLOBAL:APIVersion rm attribute
GLOBAL:ApplicationName attribute
GLOBAL:ApplicationVersion attribute
GLOBAL:AuthorContact m attribute
GLOBAL:Comment m attribute
GLOBAL:DataType FIR rm attribute
GLOBAL:History attribute
GLOBAL:License No license provided, ask the author for permission m attribute
GLOBAL:Organization m attribute
GLOBAL:References attribute
GLOBAL:RoomType reverberant m attribute
GLOBAL:Origin attribute
GLOBAL:DateCreated m attribute
GLOBAL:DateModified m attribute
GLOBAL:Title m attribute
ListenerPosition [0 0 0] m IC, MC double
ListenerPosition:Type cartesian m attribute
ListenerPosition:Units meter m attribute
ReceiverPosition [0 0.09 0; 0 -0.09 0] m rCI, rCM double
ReceiverPosition:Type cartesian m attribute
ReceiverPosition:Units meter m attribute
SourcePosition [0 0 1] m IC, MC double
SourcePosition:Type spherical m attribute
SourcePosition:Units degree, degree, meter m attribute
EmitterPosition [0 0 0] m eCI, eCM double Each speaker is represented as an emitter. Use EmitterPosition to represent the position of a particular speaker. Size of EmitterPosition determines E
EmitterPosition:Type cartesian m attribute
EmitterPosition:Units meter m attribute
GLOBAL:DatabaseName m attribute name of the database to which these data belong
GLOBAL:ListenerShortName m attribute ID of the subject from the database
GLOBAL:RoomDescription attribute narrative description of the room
ListenerUp [0 0 1] m IC, MC double
ListenerView [1 0 0] m IC, MC double
ListenerView:Type cartesian m attribute
ListenerView:Units meter m attribute
EmitterUp [0 0 1] ECI, ECM double When EmitterUp provided, EmitterView must be provided as well
EmitterView [1 0 0] ECI, ECM double When EmitterView provided, EmitterUp must be provided as well
EmitterView:Type cartesian attribute
EmitterView:Units meter attribute
Data.IR [1 1] m mREn double
Data.SamplingRate 48000 m I double
Data.SamplingRate:Units hertz m attribute
Data.Delay [0 0] m IR, MR double