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This conventions defines spatial room impulse responses (SRIRs) measured with an arbitrary number of receivers (R>1, such as a microphone array) and an omnidirectional source (E=1) in a single room.

SingleRoomSRIR is the standardized version of the previously proposed SingleRoomDRIR.

The conventions is defined in AES69-2020 (SOFA 2.0).

Name Default Flags Dimensions Type Comment
GLOBAL:Conventions SOFA rm attribute
GLOBAL:Version 2.0 rm attribute
GLOBAL:SOFAConventions SingleRoomSRIR rm attribute For measuring SRIRs in a single room with a single excitation source (e.g., a loudspeaker) and a listener containing an arbitrary number of omnidirectional receivers (e.g., a microphone array).
GLOBAL:SOFAConventionsVersion 1.0 rm attribute
GLOBAL:DataType FIR rm attribute Shall be FIR
GLOBAL:RoomType shoebox m attribute Shall be ‘shoebox’ or ‘dae’
GLOBAL:Title m attribute
GLOBAL:DateCreated m attribute
GLOBAL:DateModified m attribute
GLOBAL:APIName rm attribute
GLOBAL:APIVersion rm attribute
GLOBAL:AuthorContact m attribute
GLOBAL:Organization m attribute
GLOBAL:License No license provided, ask the author for permission m attribute
GLOBAL:ApplicationName attribute
GLOBAL:ApplicationVersion attribute
GLOBAL:Comment attribute
GLOBAL:RoomDescription attribute narrative description of the room
GLOBAL:History attribute
GLOBAL:References attribute
GLOBAL:Origin attribute
GLOBAL:ListenerShortName attribute
GLOBAL:ListenerDescription attribute
ListenerPosition [0 0 0] m MC double
ListenerPosition:Type cartesian m attribute
ListenerPosition:Units metre m attribute
ListenerView [1 0 0] m IC, MC double
ListenerUp [0 0 1] m IC, MC double
ListenerView:Type cartesian m attribute
ListenerView:Units metre m attribute
GLOBAL:ReceiverShortName attribute
GLOBAL:ReceiverDescription attribute
ReceiverPosition [0 0 0] m IC, RCI, RCM double
ReceiverPosition:Type spherical m attribute Can be of any type enabling both spatially discrete and spatially continuous representations.
ReceiverPosition:Units degree, degree, metre m attribute
ReceiverView [1 0 0] RCI, RCM double
ReceiverUp [0 0 1] RCI, RCM double
ReceiverView:Type cartesian attribute
ReceiverView:Units metre attribute
GLOBAL:SourceShortName attribute
GLOBAL:SourceDescription attribute
SourcePosition [0 0 1] m MC double
SourcePosition:Type cartesian m attribute
SourcePosition:Units metre m attribute
SourceView [1 0 0] m IC, MC double
SourceUp [0 0 1] m IC, MC double
SourceView:Type cartesian m attribute
SourceView:Units metre m attribute
GLOBAL:EmitterShortName attribute
GLOBAL:EmitterDescription attribute
EmitterPosition [0 0 0] m eCI, eCM double
EmitterPosition:Type spherical m attribute
EmitterPosition:Units degree, degree, metre m attribute
EmitterView [1 0 0] ECI, ECM double
EmitterUp [0 0 1] ECI, ECM double
EmitterView:Type cartesian attribute Shall be ‘cartesian’ or ‘spherical’, restricting to spatially discrete emitters.
EmitterView:Units metre attribute
Data.IR 0 m mrn double Impulse responses
Data.SamplingRate 48000 m I double Sampling rate of the samples in Data.IR and Data.Delay
Data.SamplingRate:Units hertz m attribute Unit of the sampling rate
Data.Delay 0 m IR, MR double Additional delay of each IR (in samples)
RoomCornerA [0 0 0] IC, MC double
RoomCornerB [1 2 3] IC, MC double
RoomCorners:Type cartesian attribute
RoomCorners:Units metre attribute
GLOBAL:DatabaseName m attribute Name of the database. Used for classification of the data.