uh-soundscapes 0.3

Read audio data for an event, process it, and create an exportable product.

UH_Soundscapes

Open-access infrasound-adjacent soundscapes

Annotated openly-available low-frequency audio libraries of rocket [1], explosion [2], and hypersonic [3] signatures are provided. We use a decimated version of the Environmental Sound Classification dataset [4] to provide a validated noise vocabulary. Although the data sources vary, a majority are from smartphone and publicly available recordings. The event types are described in open-access published papers [4-9], and a Python open-source repository was developed for accessing, standardizing, and processing the curated data and metadata [10-11]. This work was funded by the Department of Energy National Nuclear Security Administration under Awards DE-NA0003920 (MTV) and DE-NA0003921 (ETI).

Expected files in HIGP data repository [11]:

• ASTRA.pkl
• SHAReD.pkl
• ECS50_800Hz.pkl
• ECS50_16kHz.pkl
• OREX_UH_800Hz.pkl
• OREX_UH.kml

Overview of essential data fields included in the datasets:

	Signal source	Signal duration	Source locations included	Station locations included
ASTRA.pkl	Rocket launches	Various (5-10 minutes)	All	All
SHAReD.pkl	Explosions and ambient	0.96 seconds	Some	Some
esc50_df_800Hz.pkl	Various environmental sources	5 seconds	None	None
orex_best_mics_800hz_1024pt.pkl	Hypersonic atmospheric reentry	1.28 seconds	None*	All

*Source locations are not known, but can be estimated from OSIRIS-REx trajectory data.

References

1. Popenhagen, S.K. (2025). Aggregated Smartphone Timeseries of Rocket-Generated Acoustics (ASTRA). https://doi.org/10.7910/DVN/ZKIS2K (accessed on 21 August 2025).
2. Takazawa, S.K. (2024) Smartphone High-Explosive Audio Recordings Dataset (SHAReD). Available online: https://doi.org/10.7910/DVN/ROWODP (accessed on 21 August 2025).
3. Silber, E.A.; Bowman, D.C.; Carr, C.G.; Eisenberg, D.P.; Elbing, B.R.; Fernando, B.; Garcés, M.A.; et al. Geophysical Observations of the 2023 September 24 OSIRIS-REx Sample Return Capsule Reentry. Planet. Sci. J. 2024, 5, 213; https://doi.org/10.3847/PSJ/ad5b5e.
4. K. J. Piczak. ESC: Dataset for Environmental Sound Classification. In Proceedings of the 23rd ACM international conference on multimedia, pp. 1015-1018, ACM, 2015. Paper available in GitHub Repository https://github.com/karolpiczak/ESC-50 (accessed on 21 August 2025).
5. Popenhagen, S.K.; Takazawa, S.K.; Garcés, M.A. Rocket Launch Detection with Smartphone Audio and Transfer Learning. Signals 2025, 6, 41; https://doi.org/10.3390/signals6030041.
6. Popenhagen, S.K.; Garcés, M.A. Acoustic Rocket Signatures Collected by Smartphones. Signals, 2025, 6, 5; https://doi.org/10.3390/signals6010005.
7. Takazawa, S.K.; Popenhagen, S.K.; Ocampo Giraldo, L.A.; Hix, J.D.; Thompson, S.J.; Chichester, D.L.; Zeiler, C.P.; Garcés, M.A. Explosion Detection using Smartphones: Ensemble Learning with the Smartphone High-explosive Audio Recordings Dataset and the ESC-50 Dataset. Sensors, 2024, 24(20), 6688; https://doi.org/10.3390/s24206688.
8. Takazawa, S.K.; Popenhagen, S.K.; Ocampo Giraldo, L.A.; Cárdenas, E.S.; Hix, J.D.; Thompson, S.J.; Chichester, D.L.; Garcés, M.A. A comparison of smartphone and infrasound microphone data from a fuel air explosive and a high explosive. J. Acoust. Soc. Am. 2024, 156, 1509-1523; https://doi.org/10.1121/10.0028379.
9. KC, R. J; Wilson, T; Fox, D; Spillman K.; Garcés M.A.; Elbing B. R. Acoustic Observations of the OSIRIS-REx Sample Return Capsule Re-Entry from Wendover Airport. Seism. Res. Lett. 2025 XX, 1–14; https://doi.org/10.1785/0220250019.
10. UH_Soundscapes, this repository
11. UH_Soundscapes, aggregated data at https://www.higp.hawaii.edu/archive/isla/UH_Soundscapes/

TODO:

• Swap OREX NPZ for orex_best_mics_800hz_1024pt.pkl (in Google Drive) in HIGP data repository
• Add kml file for OREX locations to HIGP data repository?
• push to pypi
• Provide best available trajectory (at a later time)