Spatial Room Impulse Responses for Coupled Room Transitions

Aalto University campus measurements capture spatial room impulse responses for transitions between four coupled room pairs: Meeting Room to Hallway, Office to Anechoic Chamber, Office to Kitchen, and Office to Stairwell. Each transition includes 101 measurements at 5cm intervals over a 5-meter path, repeated for four distinct source positions to vary line-of-sight conditions. The dataset provides high-order spherical harmonic audio in SOFA and WAV formats, supplemented by acoustic analysis plots and room geometry illustrations.

Use Cases

• Modeling acoustic parameter changes (e.g., reverberation, direct-to-reverberant ratio) during room transitions based on the 101-point measurement grid.
• Developing and validating spatial audio rendering algorithms for virtual environments using the fourth-order spherical harmonic impulse responses.
• Studying the effect of source-receiver line-of-sight on sound propagation in coupled spaces, enabled by the four distinct source position configurations.
• Benchmarking denoising or signal processing techniques on measured impulse responses, as the dataset includes denoised versions (V1.4).

Strengths

• Provides a high spatial resolution of 101 measurement points per transition, enabling detailed analysis of acoustic changes.
• Includes four distinct source positions per transition, systematically varying line-of-sight conditions for controlled experiments.
• Data is available in both standard WAV and the specialized Spatially Oriented Format for Acoustics (SOFA), enhancing interoperability.
• Supplementary materials include amplitude plots, direct-to-reverberant graphs, direction-of-arrival estimates, and scaled room geometry illustrations.

Limitations

• Key metadata such as total file size, exact row count, and last update date are not provided across any source.
• The dataset is limited to four specific room pairs from a single university campus, which may limit generalizability.
• Column names and a detailed data dictionary are not available, which could complicate programmatic access.

Provenance

Source

Aalto University

Collection Method

Measured using a Genelec 8331A coaxial loudspeaker and an mh acoustics Eigenmike (32-capsule spherical microphone array).

Geography

Aalto University campus, Finland.