Coverage
How to read an SPL heatmap
What decibels of sound pressure mean, how a heatmap’s colour scale works, what uniformity of ±3 dB tells you, and why coverage is drawn to the −6 dB edge.
4 min read
Blog topic, 05
Coverage, where the signal reaches, and how well.
Sound, radio and pictures all fade with distance and walls. These articles explain how each kind of coverage is predicted, and what a good result looks like.
5 articles in this topic
Numbered by their place in the whole series.
Coverage
How to space ceiling speakers
Spacing ceiling speakers from ceiling height, listening height and coverage angle: the circle at ear level, edge-to-edge or overlapping grids, and the count.
4 min read
Acoustics
Designing sound for terraces and gardens
Outdoor areas have no ceiling and few walls. How open sides and open sky change a design, how ambient noise sets the level, and what outdoor speakers need.
3 min read
Wi-Fi
Planning Wi-Fi through walls
How 2.4, 5 and 6 GHz Wi-Fi lose signal through walls of each material, the RSSI worth designing for, and where access points go so the right rooms get it.
4 min read
CCTV
DORI explained for CCTV design
Detect, observe, recognise and identify per EN 62676-4: the pixel density behind each grade, and how resolution, lens and mounting height set the distance.
4 min read
Ready when the client is.
Draw it, check it, show it, price it and hand it over, from one project.
15-day trial for approved companies. No card, nothing to cancel.