SimpleFreeFieldSOS - Revision history

Isfmiho: /* Version 1.0 */

2021-10-05T09:20:25Z

Version 1.0

← Older revision		Revision as of 11:20, 5 October 2021
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	!Name		!Name
	!Default		!Default
			![[SOFA_conventions#AnchorFlags\|Flags]]
	!Flags
	!Dimensions		![[SOFA_conventions#AnchorDimensions\|Dimensions]]
	!Type		!Type
	!Comment		!Comment

Isfmiho: /* Description */

2021-01-14T09:51:52Z

Description

← Older revision		Revision as of 11:51, 14 January 2021
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	This SOFA convention set is similar to [[SimpleFreeFieldHRIR]]. The only difference is the DataType, which is [http://www.sofaconventions.org/mediawiki/index.php/SOFA_specifications#SOS_.28proposed.29 SOS], not FIR. SimpleFreeFieldSOS was requested to cover the needs coming from fast HRTF rendering, where an HRTF is represented as a broadband delay and small number of second-order sections (SOSs).		This SOFA convention set is similar to [[SimpleFreeFieldHRIR]]. The only difference is the DataType, which is [http://www.sofaconventions.org/mediawiki/index.php/SOFA_specifications#SOS_.28proposed.29 SOS], not FIR. SimpleFreeFieldSOS was requested to cover the needs coming from fast HRTF rendering, where an HRTF is represented as a broadband delay and small number of second-order sections (SOSs).

			It is recommended to use [[SimpleFreeFieldHRSOS]] instead, which is defined in AES69-2020 (SOFA 2.0).

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

Petibub: /* Version 1.0 */

2015-11-15T17:12:57Z

Version 1.0

← Older revision		Revision as of 19:12, 15 November 2015
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	== Version 1.0 ==		== Version 1.0 ==

	This version follows the conventions SimpleFreeFieldHRIR (version 1.0) standardized in AES69-2015~~. Note that SimpleFreeFieldSOS 1.0, in contrast to SimpleFreeFieldHRIR 1.0, has not been included in the standard, thus it is declared as stable~~.		This version follows the conventions SimpleFreeFieldHRIR (version 1.0) standardized in AES69-2015.


	Note:		Note:
			* In contrast to SimpleFreeFieldHRIR 1.0, SimpleFreeFieldSOS 1.0 has not been included in the standard. But it can be considered as stable.
	* SimpleFreeFieldSOS does not impose any restriction on the filter coefficients contained in Data.SOS. Especially it is the user responsibility to check whether the filters are stable or not.		* SimpleFreeFieldSOS does not impose any restriction on the filter coefficients contained in Data.SOS. Especially it is the user responsibility to check whether the filters are stable or not.
	* We encourage to provide information in 'History' about the creation of SOSs and estimation of delay from the underlying filters.		* We encourage to provide information in 'History' about the creation of SOSs and estimation of delay from the underlying filters.

Petibub: /* Description */

2015-11-15T17:11:45Z

Description

← Older revision		Revision as of 19:11, 15 November 2015
Line 2:		Line 2:
	==Description==		==Description==

	This SOFA convention set is similar to [[SimpleFreeFieldHRIR]]. The only difference is the DataType, which is SOS, not FIR. SimpleFreeFieldSOS was requested to cover the needs coming from fast HRTF rendering, where an HRTF is represented as a broadband delay and small number of second-order sections (SOSs).		This SOFA convention set is similar to [[SimpleFreeFieldHRIR]]. The only difference is the DataType, which is [http://www.sofaconventions.org/mediawiki/index.php/SOFA_specifications#SOS_.28proposed.29 SOS], not FIR. SimpleFreeFieldSOS was requested to cover the needs coming from fast HRTF rendering, where an HRTF is represented as a broadband delay and small number of second-order sections (SOSs).

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

Petibub: /* Version 1.0 */

2015-05-13T12:34:38Z

Version 1.0

← Older revision		Revision as of 14:34, 13 May 2015
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	\|ListenerView:Units\|\|<nowiki>metre</nowiki>\|\|m\|\|\|\|attribute\|\|		\|ListenerView:Units\|\|<nowiki>metre</nowiki>\|\|m\|\|\|\|attribute\|\|
	\|-		\|-
	\|Data.SOS\|\|<nowiki>[0 0 0 1 0 0; 0 0 0 1 0 0] </nowiki>\|\|m\|\|mRn\|\|double\|\|Filter coefficients as SOS coefficients.		\|Data.SOS\|\|<nowiki>permute([0 0 0 1 0 0; 0 0 0 1 0 0], [3 1 2]);</nowiki>\|\|m\|\|mRn\|\|double\|\|Filter coefficients as SOS coefficients.
	\|-		\|-
	\|Data.SamplingRate\|\|<nowiki>48000</nowiki>\|\|m\|\|I\|\|double\|\|Sampling rate of the coefficients in Data.SOS and the delay in Data.Delay		\|Data.SamplingRate\|\|<nowiki>48000</nowiki>\|\|m\|\|I\|\|double\|\|Sampling rate of the coefficients in Data.SOS and the delay in Data.Delay

Petibub: /* Version 1.0 */

2015-05-13T12:24:13Z

Version 1.0

← Older revision		Revision as of 14:24, 13 May 2015
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	\|ListenerView:Units\|\|<nowiki>metre</nowiki>\|\|m\|\|\|\|attribute\|\|		\|ListenerView:Units\|\|<nowiki>metre</nowiki>\|\|m\|\|\|\|attribute\|\|
	\|-		\|-
	\|Data.SOS\|\|<nowiki>[1 0 0 1 0 0] </nowiki>\|\|m\|\|mRn\|\|double\|\|Filter coefficients as SOS coefficients.		\|Data.SOS\|\|<nowiki>[0 0 0 1 0 0; 0 0 0 1 0 0] </nowiki>\|\|m\|\|mRn\|\|double\|\|Filter coefficients as SOS coefficients.
	\|-		\|-
	\|Data.SamplingRate\|\|<nowiki>48000</nowiki>\|\|m\|\|I\|\|double\|\|Sampling rate of the coefficients in Data.SOS and the delay in Data.Delay		\|Data.SamplingRate\|\|<nowiki>48000</nowiki>\|\|m\|\|I\|\|double\|\|Sampling rate of the coefficients in Data.SOS and the delay in Data.Delay
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	\|Data.SamplingRate:Units\|\|<nowiki>hertz</nowiki>\|\|m\|\|\|\|attribute\|\|		\|Data.SamplingRate:Units\|\|<nowiki>hertz</nowiki>\|\|m\|\|\|\|attribute\|\|
	\|-		\|-
	\|Data.Delay\|\|<nowiki>0</nowiki>\|\|m\|\|IR, MR\|\|double\|\|Broadband delay (in samples resulting from SamplingRate)		\|Data.Delay\|\|<nowiki>[0 0]</nowiki>\|\|m\|\|IR, MR\|\|double\|\|Broadband delay (in samples resulting from SamplingRate)
	\|}		\|}

Petibub: /* Version 1.0 */

2015-05-13T12:10:06Z

Version 1.0

← Older revision		Revision as of 14:10, 13 May 2015
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	\|GLOBAL:Comment\|\|<nowiki></nowiki>\|\|\|\|\|\|attribute\|\|		\|GLOBAL:Comment\|\|<nowiki></nowiki>\|\|\|\|\|\|attribute\|\|
	\|-		\|-
	\|GLOBAL:DataType\|\|<nowiki>SOS</nowiki>\|\|m\|\|\|\|attribute\|\|Filters described as second-order section (SOS) coefficients		\|GLOBAL:DataType\|\|<nowiki>SOS</nowiki>\|\|rm\|\|\|\|attribute\|\|Filters described as second-order section (SOS) coefficients
	\|-		\|-
	\|GLOBAL:History\|\|<nowiki></nowiki>\|\|\|\|\|\|attribute\|\|		\|GLOBAL:History\|\|<nowiki></nowiki>\|\|\|\|\|\|attribute\|\|

Petibub: /* Version 1.0 */

2015-05-13T11:52:02Z

Version 1.0

← Older revision		Revision as of 13:52, 13 May 2015
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	\|GLOBAL:SOFAConventions\|\|<nowiki>SimpleFreeFieldSOS</nowiki>\|\|rm\|\|\|\|attribute\|\|This convention set follows SimpleFreeFieldHRIR but the data is stored as second-order section (SOS) coefficients.		\|GLOBAL:SOFAConventions\|\|<nowiki>SimpleFreeFieldSOS</nowiki>\|\|rm\|\|\|\|attribute\|\|This convention set follows SimpleFreeFieldHRIR but the data is stored as second-order section (SOS) coefficients.
	\|-		\|-
	\|GLOBAL:SOFAConventionsVersion\|\|<nowiki>0.1</nowiki>\|\|rm\|\|\|\|attribute\|\|		\|GLOBAL:SOFAConventionsVersion\|\|<nowiki>1.0</nowiki>\|\|rm\|\|\|\|attribute\|\|
	\|-		\|-
	\|GLOBAL:APIName\|\|<nowiki></nowiki>\|\|rm\|\|\|\|attribute\|\|		\|GLOBAL:APIName\|\|<nowiki></nowiki>\|\|rm\|\|\|\|attribute\|\|
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	\|GLOBAL:Comment\|\|<nowiki></nowiki>\|\|\|\|\|\|attribute\|\|		\|GLOBAL:Comment\|\|<nowiki></nowiki>\|\|\|\|\|\|attribute\|\|
	\|-		\|-
	\|GLOBAL:DataType\|\|<nowiki>SOS</nowiki>\|\|rm\|\|\|\|attribute\|\|Filters described as second-order section (SOS) coefficients		\|GLOBAL:DataType\|\|<nowiki>SOS</nowiki>\|\|m\|\|\|\|attribute\|\|Filters described as second-order section (SOS) coefficients
	\|-		\|-
	\|GLOBAL:History\|\|<nowiki></nowiki>\|\|\|\|\|\|attribute\|\|		\|GLOBAL:History\|\|<nowiki></nowiki>\|\|\|\|\|\|attribute\|\|
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	\|ListenerView:Units\|\|<nowiki>metre</nowiki>\|\|m\|\|\|\|attribute\|\|		\|ListenerView:Units\|\|<nowiki>metre</nowiki>\|\|m\|\|\|\|attribute\|\|
	\|-		\|-
	\|Data.SOS\|\|<nowiki>0</nowiki>\|\|m\|\|mRn\|\|double\|\|Filter coefficients as SOS coefficients.		\|Data.SOS\|\|<nowiki>[1 0 0 1 0 0] </nowiki>\|\|m\|\|mRn\|\|double\|\|Filter coefficients as SOS coefficients.
	\|-		\|-
	\|Data.SamplingRate\|\|<nowiki>48000</nowiki>\|\|m\|\|I\|\|double\|\|Sampling rate of the coefficients in Data.SOS and the delay in Data.Delay		\|Data.SamplingRate\|\|<nowiki>48000</nowiki>\|\|m\|\|I\|\|double\|\|Sampling rate of the coefficients in Data.SOS and the delay in Data.Delay

Petibub: /* Version 1.0 */

2015-05-12T19:58:05Z

Version 1.0

← Older revision		Revision as of 21:58, 12 May 2015
Line 13:		Line 13:
	* We encourage to provide information in 'History' about the creation of SOSs and estimation of delay from the underlying filters.		* We encourage to provide information in 'History' about the creation of SOSs and estimation of delay from the underlying filters.
	* We further encourage to use 'Parents' can be used to link the SimpleFreeFieldSOS file with the file containing the original filters.		* We further encourage to use 'Parents' can be used to link the SimpleFreeFieldSOS file with the file containing the original filters.


			{\| border="1"
			!Name
			!Default
			!Flags
			!Dimensions
			!Type
			!Comment
			\|-
			\|GLOBAL:Conventions\|\|<nowiki>SOFA</nowiki>\|\|rm\|\|\|\|attribute\|\|
			\|-
			\|GLOBAL:Version\|\|<nowiki>1.0</nowiki>\|\|rm\|\|\|\|attribute\|\|
			\|-
			\|GLOBAL:SOFAConventions\|\|<nowiki>SimpleFreeFieldSOS</nowiki>\|\|rm\|\|\|\|attribute\|\|This convention set follows SimpleFreeFieldHRIR but the data is stored as second-order section (SOS) coefficients.
			\|-
			\|GLOBAL:SOFAConventionsVersion\|\|<nowiki>0.1</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>SOS</nowiki>\|\|rm\|\|\|\|attribute\|\|Filters described as second-order section (SOS) coefficients
			\|-
			\|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\|\|Source position is assumed to vary for different directions/positions 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\|\|
			\|-
			\|EmitterPosition:Type\|\|<nowiki>cartesian</nowiki>\|\|m\|\|\|\|attribute\|\|
			\|-
			\|EmitterPosition:Units\|\|<nowiki>metre</nowiki>\|\|m\|\|\|\|attribute\|\|
			\|-
			\|GLOBAL:DatabaseName\|\|<nowiki></nowiki>\|\|m\|\|\|\|attribute\|\|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.SOS\|\|<nowiki>0</nowiki>\|\|m\|\|mRn\|\|double\|\|Filter coefficients as SOS coefficients.
			\|-
			\|Data.SamplingRate\|\|<nowiki>48000</nowiki>\|\|m\|\|I\|\|double\|\|Sampling rate of the coefficients in Data.SOS and the delay in Data.Delay
			\|-
			\|Data.SamplingRate:Units\|\|<nowiki>hertz</nowiki>\|\|m\|\|\|\|attribute\|\|
			\|-
			\|Data.Delay\|\|<nowiki>0</nowiki>\|\|m\|\|IR, MR\|\|double\|\|Broadband delay (in samples resulting from SamplingRate)
			\|}

Petibub at 14:49, 12 May 2015

2015-05-12T14:49:37Z

← Older revision		Revision as of 16:49, 12 May 2015
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	SimpleFreeFieldSOS : Simple Free Field Second Order Sections

	==Description==		==Description==