Conclusion - Polycom SoundStation VTX1000 Reference Manual

THE "BRAIN" MODEL OF INTELLIGIBILITY IN BUSINESS TELEPHONY

Conclusion

Recent advances in each of the major areas of the BRAIN model, combined with the fact
that each of these can support and compensate for the others, are making good audio
conference installations much easier to achieve, and with much better result. Regrettably
for Eric Blore and Fred Astaire, it will probably be awhile before such a facility is available
in Susquehanna jail, but dramatic improvements in business audio quality are today
available to the rest of us at reasonable cost.
1
George A. Campbell, "Telephonic Intelligibility," Philosophical Magazine, 19, ser. 6 (1910): 158.
2
P. W. Barnett, Overview of Speech Intelligibility, Proceedings of the Institute of Acoustics, Rayleigh House,
Bush Hill Park, Vol. 21 Part 5 (1999).
3
Harvey Fletcher and Rogers H. Galt, "The Perception of Speech and Its Relation to Telephony," The Journal
of the Acoustical Society of America, 22 No. 2 (March 1950): 138.
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