Speech intelligibility
What an STI of 0.60 means
What the Speech Transmission Index measures, why 0.60 is a sensible design target under IEC 60268-16, and how reverberation, noise and layout move it.
4 min read
Blog topic, 02
Standards, the numbers the checks refer to.
The results cards grade designs against published figures. These articles explain where those figures come from, and what a pass does and does not tell you.
2 articles in this topic
Numbered by their place in the whole series.
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.
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