Dataset description

This dataset is comprised of acoustic Spatial Room Impulse Response (SRIR) measurements using a spherical microphone array (Eigenmike, em32). The measurements were conducted in the variable-acoustics room Arni, located in the facilities of the Acoustic Laboratories in the Aalto University. The measurements were carried out in November 2023.

The dataset includes several files that contain the SRIRs obtained using 3 different source positions and 3 different room conditions. The files are as follows:

• arni_em32_dry_SX.sofa – Dry room configuration (all reflective panels open) for source position X = {1, 2, 3}.
• arni_em32_anisotropic_SX.sofa – Anisotropic room configuration (half of the reflective panels open along one side of the room) for source position X = {1, 2, 3}
• arni_em32_reverberant_SX.sofa – Reverberant room configuration (all reflective panels closed) for source position X = {1, 2, 3}.

The room

Arni has a volume of approximately  and presents a rectangular shape with dimensions [8.9 m  6.3 m  3.6 m]. Variable acoustic panels are installed on both the ceiling and the walls. The panels can be in their open configuration, where the sound reaches the absorptive material allocated in the interior, or closed, making the surface reflective. There is a total of 55 panels distributed as follows: 8 on three of the walls, 11 on the fourth one, and 20 on the ceiling. More details about the room can be found in (Prawda et al., 2022).

The averaged atmospheric conditions during the measurement time are: