Motus: Higher-Order Ambisonic Room Impulse Responses with 3D Models

Aalto University hosts a dataset of 3,320 higher-order Ambisonic room impulse responses, measured across 830 distinct furniture configurations in a single room. Each acoustic measurement is paired with a matching 3D model and a 360° photograph of the scene. The dataset is designed to investigate room acoustics phenomena such as reverberation time, effects of absorber placement, and multi-slope decay behavior.

Use Cases

• Analyzing reverberation time based on varying furniture and absorber placements.
• Training or evaluating spatial audio rendering algorithms using paired impulse responses and 3D models.
• Studying acoustic phenomena like multi-slope decays or occluded direct paths between source and receiver.

Strengths

• Contains 3,320 total room impulse responses from 830 distinct room configurations, providing a large sample size for analysis.
• Each acoustic measurement is accompanied by a matching 3D model and 360° photograph, enabling multimodal analysis and visualization.
• Specifically includes cases with non-uniform absorber distributions and occluded direct paths, capturing complex acoustic scenarios.

Limitations

• Key metadata such as exact file size, specific column/attribute names, and the last update date are not provided across sources.
• All measurements are confined to a single room, limiting the generalizability of findings to other room geometries and materials.
• The dataset's scale, while substantial for its specific domain, may be limited for training large-scale machine learning models.

Provenance

Source

Aalto University, created by Georg Götz.

Collection Method

Acoustic measurements taken in a single room with systematically varied furniture and absorber placements.

Time Range

Associated research paper was published for the International Conference on Immersive and 3D Audio (I3DA) on 8-10 September 2021.