SimpleFreeFieldHRIR - Revision history

Isfmiho: /* Version 1.1 */

2025-09-29T06:51:42Z

Version 1.1

← Older revision		Revision as of 08:51, 29 September 2025
Line 137:		Line 137:
	SimpleFreeFieldHRIR version 1.1 represents a development stage towards standardized convention set from AES69-2025.		SimpleFreeFieldHRIR version 1.1 represents a development stage towards standardized convention set from AES69-2025.

	As compared to version 1.0, version 1.1 updates the datatype such that the size of dimension R is defined by the corresponding size of Data.IR.		As compared to version 1.0, version 1.1 updates the datatype such that the size of dimension R is defined by the corresponding size of Data.IR. ReceiverPosition must have the dimension RCI.

	{\| border="1"		{\| border="1"
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	\|ListenerPosition:Units\|\|<nowiki>metre</nowiki>\|\|m\|\|\|\|attribute\|\|		\|ListenerPosition:Units\|\|<nowiki>metre</nowiki>\|\|m\|\|\|\|attribute\|\|
	\|-		\|-
	\|ReceiverPosition\|\|<nowiki>[0 0.09 0; 0 -0.09 0]</nowiki>\|\|m\|\|RCI~~, RCM~~\|\|double\|\|		\|ReceiverPosition\|\|<nowiki>[0 0.09 0; 0 -0.09 0]</nowiki>\|\|m\|\|RCI\|\|double\|\|
	\|-		\|-
	\|ReceiverPosition:Type\|\|<nowiki>cartesian</nowiki>\|\|m\|\|\|\|attribute\|\|		\|ReceiverPosition:Type\|\|<nowiki>cartesian</nowiki>\|\|m\|\|\|\|attribute\|\|

Isfmiho: /* Version 1.2 */

2025-09-29T06:50:43Z

Version 1.2

← Older revision		Revision as of 08:50, 29 September 2025
Line 82:		Line 82:
	\|ListenerPosition:Units\|\|<nowiki>metre</nowiki>\|\|m\|\|\|\|attribute\|\|		\|ListenerPosition:Units\|\|<nowiki>metre</nowiki>\|\|m\|\|\|\|attribute\|\|
	\|-		\|-
	\|ReceiverPosition\|\|<nowiki>[0 0.09 0; 0 -0.09 0]</nowiki>\|\|m\|\|RCI~~, RCM~~\|\|double\|\|		\|ReceiverPosition\|\|<nowiki>[0 0.09 0; 0 -0.09 0]</nowiki>\|\|m\|\|RCI\|\|double\|\|
	\|-		\|-
	\|ReceiverPosition:Type\|\|<nowiki>cartesian</nowiki>\|\|m\|\|\|\|attribute\|\|		\|ReceiverPosition:Type\|\|<nowiki>cartesian</nowiki>\|\|m\|\|\|\|attribute\|\|

Isfmiho: /* Version 1.1 */

2025-09-24T11:58:24Z

Version 1.1

← Older revision		Revision as of 13:58, 24 September 2025
Line 172:		Line 172:
	\|-		\|-
	\|GLOBAL:License\|\|<nowiki>No license provided, ask the author for permission</nowiki>\|\|m\|\|\|\|attribute\|\|		\|GLOBAL:License\|\|<nowiki>No license provided, ask the author for permission</nowiki>\|\|m\|\|\|\|attribute\|\|
		⚫	\|-
		⚫	\|GLOBAL:DatabaseName\|\|<nowiki></nowiki>\|\|m\|\|\|\|attribute\|\|Unique name of the database to which these data belong.
		⚫	\|-
		⚫	\|GLOBAL:ListenerShortName\|\|<nowiki></nowiki>\|\|m\|\|\|\|attribute\|\|ID of the subject from the database.
	\|-		\|-
	\|GLOBAL:Organization\|\|<nowiki></nowiki>\|\|m\|\|\|\|attribute\|\|		\|GLOBAL:Organization\|\|<nowiki></nowiki>\|\|m\|\|\|\|attribute\|\|
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	\|-		\|-
	\|EmitterPosition:Units\|\|<nowiki>metre</nowiki>\|\|m\|\|\|\|attribute\|\|		\|EmitterPosition:Units\|\|<nowiki>metre</nowiki>\|\|m\|\|\|\|attribute\|\|
⚫	\|-
⚫	\|GLOBAL:DatabaseName\|\|<nowiki></nowiki>\|\|m\|\|\|\|attribute\|\|Unique name of the database to which these data belong.
⚫	\|-
⚫	\|GLOBAL:ListenerShortName\|\|<nowiki></nowiki>\|\|m\|\|\|\|attribute\|\|ID of the subject from the database.
	\|-		\|-
	\|ListenerUp\|\|<nowiki>[0 0 1]</nowiki>\|\|m\|\|IC, MC\|\|double\|\|		\|ListenerUp\|\|<nowiki>[0 0 1]</nowiki>\|\|m\|\|IC, MC\|\|double\|\|

Isfmiho: /* Version 1.2 */

2025-09-24T11:58:06Z

Version 1.2

← Older revision		Revision as of 13:58, 24 September 2025
Line 57:		Line 57:
	\|-		\|-
	\|GLOBAL:License\|\|<nowiki>No license provided, ask the author for permission</nowiki>\|\|m\|\|\|\|attribute\|\|		\|GLOBAL:License\|\|<nowiki>No license provided, ask the author for permission</nowiki>\|\|m\|\|\|\|attribute\|\|
		⚫	\|-
		⚫	\|GLOBAL:DatabaseName\|\|<nowiki></nowiki>\|\|m\|\|\|\|attribute\|\|Unique name of the database to which these data belong.
		⚫	\|-
		⚫	\|GLOBAL:ListenerShortName\|\|<nowiki></nowiki>\|\|m\|\|\|\|attribute\|\|ID of the subject from the database.
	\|-		\|-
	\|GLOBAL:Organization\|\|<nowiki></nowiki>\|\|m\|\|\|\|attribute\|\|		\|GLOBAL:Organization\|\|<nowiki></nowiki>\|\|m\|\|\|\|attribute\|\|
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	\|-		\|-
	\|EmitterPosition:Units\|\|<nowiki>metre</nowiki>\|\|m\|\|\|\|attribute\|\|		\|EmitterPosition:Units\|\|<nowiki>metre</nowiki>\|\|m\|\|\|\|attribute\|\|
⚫	\|-
⚫	\|GLOBAL:DatabaseName\|\|<nowiki></nowiki>\|\|m\|\|\|\|attribute\|\|Unique name of the database to which these data belong.
⚫	\|-
⚫	\|GLOBAL:ListenerShortName\|\|<nowiki></nowiki>\|\|m\|\|\|\|attribute\|\|ID of the subject from the database.
	\|-		\|-
	\|ListenerUp\|\|<nowiki>[0 0 1]</nowiki>\|\|m\|\|IC, MC\|\|double\|\|		\|ListenerUp\|\|<nowiki>[0 0 1]</nowiki>\|\|m\|\|IC, MC\|\|double\|\|

Isfmiho: /* Version 1.2 */

2025-09-24T10:40:00Z

Version 1.2

@@ Line 20: / Line 20: @@
 == Version 1.2 ==
 SimpleFreeFieldHRIR version 1.2 will represent the standardized convention set from AES69-2025.
 == Version 1.1 ==

Isfmiho: /* Version 1.1 */

2025-09-24T10:39:41Z

Version 1.1

← Older revision		Revision as of 12:39, 24 September 2025
Line 26:		Line 26:

	SimpleFreeFieldHRIR version 1.1 represents a development stage towards standardized convention set from AES69-2025.		SimpleFreeFieldHRIR version 1.1 represents a development stage towards standardized convention set from AES69-2025.

			As compared to version 1.0, version 1.1 updates the datatype such that the size of dimension R is defined by the corresponding size of Data.IR.

	{\| border="1"		{\| border="1"

Isfmiho: /* Version 1.1 */

2025-09-24T10:39:11Z

Version 1.1

← Older revision		Revision as of 12:39, 24 September 2025
Line 27:		Line 27:
	SimpleFreeFieldHRIR version 1.1 represents a development stage towards standardized convention set from AES69-2025.		SimpleFreeFieldHRIR version 1.1 represents a development stage towards standardized convention set from AES69-2025.

			{\| border="1"
			!Name
			!Default
			![[SOFA_conventions#AnchorFlags\|Flags]]
			![[SOFA_conventions#AnchorDimensions\|Dimensions]]
			!Type
			!Comment
			\|-
			\|GLOBAL:Conventions\|\|<nowiki>SOFA</nowiki>\|\|rm\|\|\|\|attribute\|\|
			\|-
			\|GLOBAL:Version\|\|<nowiki>2.1</nowiki>\|\|rm\|\|\|\|attribute\|\|
			\|-
			\|GLOBAL:SOFAConventions\|\|<nowiki>SimpleFreeFieldHRIR</nowiki>\|\|rm\|\|\|\|attribute\|\|This convention set is for impulse responses recorded under free-field conditions or conditions with irrelevant room information.
			\|-
			\|GLOBAL:SOFAConventionsVersion\|\|<nowiki>1.1</nowiki>\|\|rm\|\|\|\|attribute\|\|
			\|-
			\|GLOBAL:APIName\|\|<nowiki></nowiki>\|\|rm\|\|\|\|attribute\|\|
			\|-
			\|GLOBAL:APIVersion\|\|<nowiki></nowiki>\|\|rm\|\|\|\|attribute\|\|
			\|-
			\|GLOBAL:ApplicationName\|\|<nowiki></nowiki>\|\|\|\|\|\|attribute\|\|
			\|-
			\|GLOBAL:ApplicationVersion\|\|<nowiki></nowiki>\|\|\|\|\|\|attribute\|\|
			\|-
			\|GLOBAL:AuthorContact\|\|<nowiki></nowiki>\|\|m\|\|\|\|attribute\|\|
			\|-
			\|GLOBAL:Comment\|\|<nowiki></nowiki>\|\|\|\|\|\|attribute\|\|
			\|-
			\|GLOBAL:DataType\|\|<nowiki>FIR</nowiki>\|\|rm\|\|\|\|attribute\|\|
			\|-
			\|GLOBAL:History\|\|<nowiki></nowiki>\|\|\|\|\|\|attribute\|\|
			\|-
			\|GLOBAL:License\|\|<nowiki>No license provided, ask the author for permission</nowiki>\|\|m\|\|\|\|attribute\|\|
			\|-
			\|GLOBAL:Organization\|\|<nowiki></nowiki>\|\|m\|\|\|\|attribute\|\|
			\|-
			\|GLOBAL:References\|\|<nowiki></nowiki>\|\|\|\|\|\|attribute\|\|
			\|-
			\|GLOBAL:RoomType\|\|<nowiki>free field</nowiki>\|\|m\|\|\|\|attribute\|\|
			\|-
			\|GLOBAL:Origin\|\|<nowiki></nowiki>\|\|\|\|\|\|attribute\|\|
			\|-
			\|GLOBAL:DateCreated\|\|<nowiki></nowiki>\|\|m\|\|\|\|attribute\|\|
			\|-
			\|GLOBAL:DateModified\|\|<nowiki></nowiki>\|\|m\|\|\|\|attribute\|\|
			\|-
			\|GLOBAL:Title\|\|<nowiki></nowiki>\|\|m\|\|\|\|attribute\|\|
			\|-
			\|ListenerPosition\|\|<nowiki>[0 0 0] </nowiki>\|\|m\|\|IC, MC\|\|double\|\|
			\|-
			\|ListenerPosition:Type\|\|<nowiki>cartesian</nowiki>\|\|m\|\|\|\|attribute\|\|
			\|-
			\|ListenerPosition:Units\|\|<nowiki>metre</nowiki>\|\|m\|\|\|\|attribute\|\|
			\|-
			\|ReceiverPosition\|\|<nowiki>[0 0.09 0; 0 -0.09 0]</nowiki>\|\|m\|\|RCI, RCM\|\|double\|\|
			\|-
			\|ReceiverPosition:Type\|\|<nowiki>cartesian</nowiki>\|\|m\|\|\|\|attribute\|\|
			\|-
			\|ReceiverPosition:Units\|\|<nowiki>metre</nowiki>\|\|m\|\|\|\|attribute\|\|
			\|-
			\|SourcePosition\|\|<nowiki>[0 0 1]</nowiki>\|\|m\|\|IC, MC\|\|double\|\|The source position is assumed to vary around the listener.
			\|-
			\|SourcePosition:Type\|\|<nowiki>spherical</nowiki>\|\|m\|\|\|\|attribute\|\|
			\|-
			\|SourcePosition:Units\|\|<nowiki>degree, degree, metre</nowiki>\|\|m\|\|\|\|attribute\|\|
			\|-
			\|EmitterPosition\|\|<nowiki>[0 0 0]</nowiki>\|\|m\|\|eCI, eCM\|\|double\|\|Source consists of a single Emitter only.
			\|-
			\|EmitterPosition:Type\|\|<nowiki>cartesian</nowiki>\|\|m\|\|\|\|attribute\|\|
			\|-
			\|EmitterPosition:Units\|\|<nowiki>metre</nowiki>\|\|m\|\|\|\|attribute\|\|
			\|-
			\|GLOBAL:DatabaseName\|\|<nowiki></nowiki>\|\|m\|\|\|\|attribute\|\|Unique name of the database to which these data belong.
			\|-
			\|GLOBAL:ListenerShortName\|\|<nowiki></nowiki>\|\|m\|\|\|\|attribute\|\|ID of the subject from the database.
			\|-
			\|ListenerUp\|\|<nowiki>[0 0 1]</nowiki>\|\|m\|\|IC, MC\|\|double\|\|
			\|-
			\|ListenerView\|\|<nowiki>[1 0 0]</nowiki>\|\|m\|\|IC, MC\|\|double\|\|
			\|-
			\|ListenerView:Type\|\|<nowiki>cartesian</nowiki>\|\|m\|\|\|\|attribute\|\|
			\|-
			\|ListenerView:Units\|\|<nowiki>metre</nowiki>\|\|m\|\|\|\|attribute\|\|
			\|-
			\|Data.IR\|\|<nowiki>[0 0]</nowiki>\|\|m\|\|mrn\|\|double\|\|
			\|-
			\|Data.SamplingRate\|\|<nowiki>48000</nowiki>\|\|m\|\|I, M\|\|double\|\|Sampling rate of the samples in Data.IR and Data.Delay.
			\|-
			\|Data.SamplingRate:Units\|\|<nowiki>hertz</nowiki>\|\|m\|\|\|\|attribute\|\|Unit of the sampling rate.
			\|-
			\|Data.Delay\|\|<nowiki>[0 0]</nowiki>\|\|m\|\|IR, MR\|\|double\|\|Additional delay of each IR (in samples, with the time interval as described by SamplingRate).
			\|-
			\|SourceUp\|\|<nowiki>[0 0 1]</nowiki>\|\|\|\|IC, MC\|\|double\|\|
			\|-
			\|SourceView\|\|<nowiki>[1 0 0]</nowiki>\|\|\|\|IC, MC\|\|double\|\|
			\|-
			\|SourceView:Type\|\|<nowiki>cartesian</nowiki>\|\|\|\|\|\|attribute\|\|
			\|-
			\|SourceView:Units\|\|<nowiki>metre</nowiki>\|\|\|\|\|\|attribute\|\|
			\|}

	== Version 1.0 ==		== Version 1.0 ==

Isfmiho: SimpleFreeFieldHRIR

2025-09-24T10:38:44Z

SimpleFreeFieldHRIR

← Older revision		Revision as of 12:38, 24 September 2025
Line 1:		Line 1:
	==Description==		==Description==

	This conventions essentially defines the setup used to measure HRTFs in free field. The measured HRTFs are represented as FIR filters, with a single HRTF set of a listener per file. ~~We defined this conventions to describe data from databases like [http://www.kfs.oeaw.ac.at/hrtf ARI], LISTEN, FIU, CIPIC, and others.~~		This conventions essentially defines the setup used to measure HRTFs in free field. The measured HRTFs are represented as FIR filters, with a single HRTF set of a listener per file.

		⚫	[[File:SimpleFreeFieldHRIR-0.3.png\|right\|thumb\|225px]]
		⚫	This convention set essentially defines the setup used in the [http://www.kfs.oeaw.ac.at/hrtf ARI], LISTEN, FIU, CIPIC, and other similar HRTF databases. The measurements are done in free field with a single excitation source assuming an omnidirectional loudspeaker. Human listeners are considered and thus, the number of receivers is usually two. Note that usually, only the apparent azimuth and elevation angles are provided and this information is modeled as the variation of the source position. This convention set can, however, also be used to describe more complex data where the tilt of the head is varied or the listener is not exactly in the center of the measurement setup. The measured HRTFs are represented as FIR filters, with a single HRTF set of a listener per file.

		⚫	* General attributes: SOFAConventions: SimpleFreeFieldHRIR, Datatype: FIR, RoomType: free field, other general attributes...

		⚫	* Listener: The listener is in the origin of the setup, facing in the direction of the y-axis. Thus, for default values, ListenerPosition=[0 0 0], ListenerView=[1 0 0], ListenerUp=[0 0 1], all given in cartesian coordinates.
		⚫	* Receivers: Per default, two Receivers (=ears) are defined on a head with radius H (in meter, default: 0.09), thus, ReceiverPosition=[0 H 0; 0 -H 0]. Note that any positive integer number of Receivers can be used, though.
		⚫	* Source: Source consists of a single Emitter only. Per default, EmitterPosition=[0 0 0] in cartesian coordinates. SourcePosition (in spherical coordinates!) varies corresponding to the different azimuth and elevation angles of the measurement directions. Per default, SourcePosition=[0 0 1] (azimuth 0°, elevation 0°, distance 1 m). SourceUp and SourceView are not considered and optional.

	In SimpleFreeFieldHRIR version 0.2, we used ListenerRotation to describe the different measurement directions, and the source was assumed to be in the center of the measurement setup. This, however, limited the use of SimpleFreeFieldHRIR, thus, in version 0.4, we use SourcePosition to represent the different HRTF directions. By doing so, more complex data can be described where the tilt of the head is varied, or the listener is not exactly in the center of the measurement setup.		In SimpleFreeFieldHRIR version 0.2, we used ListenerRotation to describe the different measurement directions, and the source was assumed to be in the center of the measurement setup. This, however, limited the use of SimpleFreeFieldHRIR, thus, in version 0.4, we use SourcePosition to represent the different HRTF directions. By doing so, more complex data can be described where the tilt of the head is varied, or the listener is not exactly in the center of the measurement setup.
Line 9:		Line 18:
	* ''SubjectID'' has been renamed to '''ListenerShortName''' (in order to be more consistent with the general naming of the metadata).		* ''SubjectID'' has been renamed to '''ListenerShortName''' (in order to be more consistent with the general naming of the metadata).

		⚫	== Version 1.2 ==
⚫	SimpleFreeFieldHRIR version 1.0 represents the current standardized convention set from AES69-2015.

			SimpleFreeFieldHRIR version 1.2 will represent the standardized convention set from AES69-2025.
⚫	== Version 1.0 ==

⚫	[[File:SimpleFreeFieldHRIR-0.3.png\|right\|thumb\|225px]]
⚫	This convention set essentially defines the setup used in the [http://www.kfs.oeaw.ac.at/hrtf ARI], LISTEN, FIU, CIPIC, and other similar HRTF databases. The measurements are done in free field with a single excitation source assuming an omnidirectional loudspeaker. Human listeners are considered and thus, the number of receivers is usually two. Note that usually, only the apparent azimuth and elevation angles are provided and this information is modeled as the variation of the source position. This convention set can, however, also be used to describe more complex data where the tilt of the head is varied or the listener is not exactly in the center of the measurement setup. The measured HRTFs are represented as FIR filters, with a single HRTF set of a listener per file.

			== Version 1.1 ==
⚫	* General attributes: SOFAConventions: SimpleFreeFieldHRIR, Datatype: FIR, RoomType: free field, other general attributes...

			SimpleFreeFieldHRIR version 1.1 represents a development stage towards standardized convention set from AES69-2025.
⚫	* Listener: The listener is in the origin of the setup, facing in the direction of the y-axis. Thus, for default values, ListenerPosition=[0 0 0], ListenerView=[1 0 0], ListenerUp=[0 0 1], all given in cartesian coordinates.
⚫	* Receivers: Per default, two Receivers (=ears) are defined on a head with radius H (in meter, default: 0.09), thus, ReceiverPosition=[0 H 0; 0 -H 0]. Note that any positive integer number of Receivers can be used, though.
⚫	* Source: Source consists of a single Emitter only. Per default, EmitterPosition=[0 0 0] in cartesian coordinates. SourcePosition (in spherical coordinates!) varies corresponding to the different azimuth and elevation angles of the measurement directions. Per default, SourcePosition=[0 0 1] (azimuth 0°, elevation 0°, distance 1 m). SourceUp and SourceView are not considered and optional.


			== Version 1.0 ==

		⚫	SimpleFreeFieldHRIR version 1.0 represents the current standardized convention set from AES69-2015.

	{\| border="1"		{\| border="1"

Petibub: /* Version 1.0 */

2024-04-02T16:49:50Z

Version 1.0

← Older revision		Revision as of 18:49, 2 April 2024
Line 14:		Line 14:

	[[File:SimpleFreeFieldHRIR-0.3.png\|right\|thumb\|225px]]		[[File:SimpleFreeFieldHRIR-0.3.png\|right\|thumb\|225px]]
	This convention set essentially defines the setup used in the [http://www.kfs.oeaw.ac.at/hrtf ARI], LISTEN, FIU, CIPIC, and other similar HRTF databases. The measurements are done in free field with a single excitation source assuming an omnidirectional loudspeaker. Human listeners are considered and thus, the number of receivers is two. Note that usually, only the apparent azimuth and elevation angles are provided and this information is modeled as the variation of the source position. This convention set can, however, also be used to describe more complex data where the tilt of the head is varied or the listener is not exactly in the center of the measurement setup. The measured HRTFs are represented as FIR filters, with a single HRTF set of a listener per file.		This convention set essentially defines the setup used in the [http://www.kfs.oeaw.ac.at/hrtf ARI], LISTEN, FIU, CIPIC, and other similar HRTF databases. The measurements are done in free field with a single excitation source assuming an omnidirectional loudspeaker. Human listeners are considered and thus, the number of receivers is usually two. Note that usually, only the apparent azimuth and elevation angles are provided and this information is modeled as the variation of the source position. This convention set can, however, also be used to describe more complex data where the tilt of the head is varied or the listener is not exactly in the center of the measurement setup. The measured HRTFs are represented as FIR filters, with a single HRTF set of a listener per file.

	* General attributes: SOFAConventions: SimpleFreeFieldHRIR, Datatype: FIR, RoomType: free field, other general attributes...		* General attributes: SOFAConventions: SimpleFreeFieldHRIR, Datatype: FIR, RoomType: free field, other general attributes...

	* Listener: The listener is in the origin of the setup, facing in the direction of the y-axis. Thus, for default values, ListenerPosition=[0 0 0], ListenerView=[1 0 0], ListenerUp=[0 0 1], all given in cartesian coordinates.		* Listener: The listener is in the origin of the setup, facing in the direction of the y-axis. Thus, for default values, ListenerPosition=[0 0 0], ListenerView=[1 0 0], ListenerUp=[0 0 1], all given in cartesian coordinates.
	* Receivers: ~~Two~~ ~~receivers~~ (=ears) on a head with radius H (in meter, default: 0.09): ReceiverPosition=[0 H 0; 0 -H 0].		* Receivers: Per default, two Receivers (=ears) are defined on a head with radius H (in meter, default: 0.09), thus, ReceiverPosition=[0 H 0; 0 -H 0]. Note that any positive integer number of Receivers can be used, though.
	* Source: Source consists of a single ~~emitter~~. ~~For~~ default ~~values~~, EmitterPosition=[0 0 0] in cartesian coordinates. SourcePosition (in spherical coordinates!) varies corresponding to the different azimuth and elevation angles of the measurement directions. ~~For~~ default, SourcePosition=[0 0 1] (azimuth 0°, elevation 0°, distance 1 m). SourceUp and SourceView are not considered and optional.		* Source: Source consists of a single Emitter only. Per default, EmitterPosition=[0 0 0] in cartesian coordinates. SourcePosition (in spherical coordinates!) varies corresponding to the different azimuth and elevation angles of the measurement directions. Per default, SourcePosition=[0 0 1] (azimuth 0°, elevation 0°, distance 1 m). SourceUp and SourceView are not considered and optional.

Isfmiho: /* Version 1.0 */

2022-10-21T11:25:05Z

Version 1.0

← Older revision		Revision as of 13:25, 21 October 2022
Line 33:		Line 33:
	\|GLOBAL:Conventions\|\|<nowiki>SOFA</nowiki>\|\|rm\|\|\|\|attribute\|\|		\|GLOBAL:Conventions\|\|<nowiki>SOFA</nowiki>\|\|rm\|\|\|\|attribute\|\|
	\|-		\|-
	\|GLOBAL:Version\|\|<nowiki>2.0</nowiki>\|\|rm\|\|\|\|attribute\|\|		\|GLOBAL:Version\|\|<nowiki>2.1</nowiki>\|\|rm\|\|\|\|attribute\|\|
	\|-		\|-
	\|GLOBAL:SOFAConventions\|\|<nowiki>SimpleFreeFieldHRIR</nowiki>\|\|rm\|\|\|\|attribute\|\|This convention set is for HRIRs recorded under free-field conditions or other IRs created under conditions where room information is irrelevant		\|GLOBAL:SOFAConventions\|\|<nowiki>SimpleFreeFieldHRIR</nowiki>\|\|rm\|\|\|\|attribute\|\|This convention set is for HRIRs recorded under free-field conditions or other IRs created under conditions where room information is irrelevant