Speech Intelligibility Websites:
mlssa.com
DRA Laboratories - MLSSA Acoustical Measurement System
MLSSA by DRA Laboratories is the loudspeaker industry's standard measurement system. MLSSA is also used by automakers, recording studios, acousticians and government agencies to...
acoustics-engineering.com
Acoustics Engineering - Home Page
Acoustics Engineering develops hardware and software tools centered around the Dirac impulse response measurement system.