TAU Spatial Sound Events 2019: Ambisonic and Microphone Array Development Datasets

400 one-minute audio recordings sampled at 48000 Hz, divided into four cross-validation splits. The datasets contain synthesized spatial sound events with temporal and directional annotations, created by Tampere University for the DCASE 2019 challenge. Recordings were synthesized using spatial room impulse responses collected in Finland between December 2017 and June 2018, convolved with isolated sound events and mixed with ambient noise.

Use Cases

• Training sound event localization models based on annotated temporal onset/offset times and direction-of-arrival coordinates.
• Comparing model performance on different spatial audio formats based on the parallel First-Order Ambisonic and tetrahedral microphone array recordings.
• Developing cross-validation strategies for audio tasks based on the provided four splits of 100 recordings each.
• Synthesizing realistic indoor acoustic scenes based on the methodology using convolved impulse responses and added ambient noise at 30 dB SNR.

Strengths

• Contains 400 synchronized one-minute recordings in two spatial audio formats derived from the same source.
• Annotations include sound class, temporal boundaries, and direction-of-arrival coordinates (azimuth and elevation).
• Recordings were synthesized using 504 unique spatial room impulse response combinations from five indoor locations.
• Includes natural ambient noise mixed at a controlled average signal-to-noise ratio of 30 decibels.

Limitations

• Row count and specific column-level documentation are unknown; field semantics must be inferred after download.
• Last update date is unknown; freshness unverified.
• The data consists of synthesized scenes, which may not fully capture the variability of real-world recordings.

Provenance

Source

Tampere University

Collection Method

Synthesized from spatial room impulse responses convolved with isolated sound events and mixed with ambient noise.

Time Range

Impulse responses collected between 12/2017 - 06/2018.

Geography

Finland (indoor locations)