Accessing the BRIRs
This page includes information that can be used to access the BRIRs in the dataset.
The BRIRs are provided as 2 channel WAV files with a sampling rate of 44100Hz and a bit depth of 24 bits per sample.
The BRIRs can be used to create virtual surround sound on headphones through BRIR convolution. This requires IR Convolution software that supports true stereo processing such as Equalizer APO. Configurations for Equalizer APO are provided for a range of speaker configurations and for each room in the dataset.
The file names follow the name coding described below:
BRIR_<Room_ID>_<Position_ID>_<Elevation>_<Azimuth>.WAV
| Field | Range | Description |
|---|---|---|
| Room_ID | From R01 to R37 | Room ID number sorted by date added to the dataset. Refer to the Room Information page for room names and room IDs. |
| Position_ID | From P1 to P3 | The ID number of each set of source and listener positions. Some rooms include multiple positional configurations. Refer to the Measurement Setups page for more information. |
| Elevation | E0 | Elevation angle between source and listener in degrees. 0 corresponds to a point at the same level as the listener. |
| Azimuth | From A-179 to A180 | Azimuth angle between the source and listener in degrees. Refer to the coordinate system below. |
A set of alternative BRIRs with reduced reverberation is available for a selection of rooms from the dataset including: R08 (room spirit), R14 (classroom), R17 (room HU201), R19 (coupled rooms), R22P1 (large room), R23, R26, R28, R30, and R35 (small rooms). The approximate RT60 reverberation time for this set of BRIRs is 350ms.
The alternative BRIRs can be identified by the modified name coding:
BRIR_<Room_ID>_<RT60>_<Position_ID>_<Elevation>_<Azimuth>.WAV
The azimuth angles between the source and the listener’s head follow the coordinate system shown in the diagram below. An azimuth of -90 corresponds to a point directly to the left of the listener while an azimuth of 90 corresponds to a point directly to the right of the listener.
