GeoAcoustic RTX — siren siting demo

Built 2026-08-30 20:55. Everything here is a research demonstration, uncalibrated: levels are relative transfer, source spectra are declared placeholders, building heights outside the ID Vilnius model come from OSM tags or defaults. Nothing on these pages is a compliance map.

Siren siting workbench

• candidates.html — the bundled surface (web/siting/data), ID Vilnius roofs
• candidates.html, online build — any Lithuanian city from OSM + the 1 m DTM + the 2021 census; static OSM tiles cover 20.900..26.913 E, 53.850..56.509 N (4243 tiles, 1120123 elements)

NoiseModelling results

• data_nm_all40 Current siren placement of Vilnius (open data layer 'Gyventoju perspejimo sirenos', 94 sirens, fetched 2026-08-30 15:49:33), each siren simulated alone by NoiseModelling 6.0.0 (CNOSSOS-EU: OSM buildin

Engine runs

• line_4m_t025 scene: tile_1km_material_terrain.glb; live COGs: raw/levels_db.cog.tif
• spdb162_render_tile_30m_1m scene: ; live COGs: raw/receiver_occupancy.cog.tif, spd_field_db.cog.tif, spd_field_bands_db.cog.tif; not shipped (over 25 MB): raw/levels_db.cog.tif (30.6 MB)

• renders

Data and attribution

Buildings and land use: © OpenStreetMap contributors, ODbL. Terrain: DTM-LT-1m, Lithuanian national DTM. Localities: VI Registru centras via HNIT-Baltic, CC BY 4.0. Population: 2021 census 100 m grid, Statistics Lithuania via open.geodata.gov.lt, CC BY 4.0, carried at its own resolution and never resampled. Sirens: Vilnius open-data layer Gyventojų perspėjimo sirenos. 3D buildings of Vilnius: ID Vilnius, by permission, for this audience only.