SOFA specifications: Difference between revisions
Jump to navigation
Jump to search
Content deleted Content added
No edit summary |
|||
| Line 9: | Line 9: | ||
* [http://sourceforge.net/projects/sofacoustics/files/SOFA%20specs%200.2.pdf/download Version 0.2: Specifications] |
* [http://sourceforge.net/projects/sofacoustics/files/SOFA%20specs%200.2.pdf/download Version 0.2: Specifications] |
||
* [http://sourceforge.net/projects/sofacoustics/files/SOFA%20specs%200.1%20%28as%20of%20AES%202013%29.pdf/download Version 0.1: Specifications as presented at the AES Convention 2013 in Rom] |
* [http://sourceforge.net/projects/sofacoustics/files/SOFA%20specs%200.1%20%28as%20of%20AES%202013%29.pdf/download Version 0.1: Specifications as presented at the AES Convention 2013 in Rom] |
||
| ⚫ | |||
| ⚫ | |||
== Data Types == |
== Data Types == |
||
| Line 88: | Line 93: | ||
|Data.Delay||<nowiki>0</nowiki>||m||IRE, MRE||double||Additional delay of each IR (always in samples, i.e. units of N) |
|Data.Delay||<nowiki>0</nowiki>||m||IRE, MRE||double||Additional delay of each IR (always in samples, i.e. units of N) |
||
|} |
|} |
||
| ⚫ | |||
| ⚫ | |||
Revision as of 17:49, 8 May 2015
Specifications
- SOFA 1.0 is reflected by the AES69-2015 standard. It mostly corresponds to SOFA 0.6, which specs can be downloaded here. A document with SOFA 1.0 specs is under preparation.
Older specs:
- Version 0.5: Download specifications
- Version 0.4: Discussion on the specifications (closed)
- Version 0.3: Download specifications
- Version 0.2: Specifications
- Version 0.1: Specifications as presented at the AES Convention 2013 in Rom
Coordinate system
Data Types
FIR (SOFA 1.0)
For storing impulse responses.
Note: Delay is mandatory (set to 0 if not used).
| Name | Default | Flags | Dimensions | Type | Comment |
|---|---|---|---|---|---|
| GLOBAL:DataType | FIR | rm | attribute | ||
| Data.IR | 0 | m | mRn | double | Impulse responses |
| Data.SamplingRate | 48000 | m | I | double | Sampling rate of the samples in Data.IR |
| Data.SamplingRate:Units | hertz | m | attribute | Unit of the sampling rate | |
| Data.Delay | 0 | m | IR, MR | double | Additional delay of each IR (always in samples, i.e. units of N) |
TF (SOFA 1.0)
Useful to describe a transfer function by a sparse number of frequencies. The guys from BEM simulations like it.
Note: the dimensional variable N is mandatory, it must be of dimension N, and must provide the frequency values.
| Name | Default | Flags | Dimensions | Type | Comment |
|---|---|---|---|---|---|
| GLOBAL:DataType | TF | rm | attribute | ||
| Data.Real | 0 | m | mRn | double | The real part of the complex spectrum |
| Data.Imag | 0 | m | MRN | double | The imaginary part of the complex spectrum |
| N | 0 | m | N | double | Frequency values |
| N_LongName | frequency | attribute | |||
| N_Units | hertz | m | attribute | Unit of the values given in N |
FIRE (proposed)
FIRE is based on FIR and is intended for storing impulse responses which depend on the emitter (E).
Note: Delay is mandatory (set to 0 if not used).
| Name | Default | Flags | Dimensions | Type | Comment |
|---|---|---|---|---|---|
| GLOBAL:DataType | FIRE | rm | attribute | ||
| Data.IR | 0 | m | mREn | double | Impulse responses |
| Data.SamplingRate | 48000 | m | I | double | Sampling rate of the samples in Data.IR |
| Data.SamplingRate:Units | hertz | m | attribute | Unit of the sampling rate | |
| Data.Delay | 0 | m | IRE, MRE | double | Additional delay of each IR (always in samples, i.e. units of N) |