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Check browser spatial audio levels against computed distance and panning numbers
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What this guide covers
For web audio and three.js developers who want to know what a distance model should output before relying on their ears. You get a computed level table, a test page and a script that compares a saved render with the table. The page was never opened in a browser, so the browser steps are untested.
More about this guide
Guide ID: art_01M6SGCBMEEBQYN1Z8T18ANGPA
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Guide title
Check browser spatial audio levels against computed distance and panning numbers
Coverage
For web audio and three.js developers who want to know what a distance model should output before relying on their ears. You get a computed level table, a test page and a script that compares a saved render with the table. The page was never opened in a browser, so the browser steps are untested.
Example
A table of computed levels for 23 test cases (inverse, linear and exponential distance, left-right panning, cones), checked only against a stand-in WAV the guide's own script generates; no browser render exists.
Useful starting points
- Inverse and exponential distance models ignore maxDistance; only the linear model uses it.
- Equalpower panning puts a source straight ahead about 3 dB below the unpanned level in each channel, so a 3 dB drop is not by itself a fault.
- A very quiet row in a 16-bit file cannot be settled at a tight tolerance; read it as inconclusive, not as a pass or a fail.
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