Trial by “Sound Jury” (Jul, 1948)
Trial by “Sound Jury”
After Bell Laboratories engineers have designed a new talking circuit, they measure its characteristics by oscilloscopes and meters.
But a talker and a listener are part of every telephone call, and to satisfy them is the primary Bell System aim.
So, before the circuit is put into operation, a “sound jury” listens in. An actual performance test is set up with the trained ears of the jurors to supplement the meters.
As syllables, words, and sentences come in over the telephones, pencils are busy over score sheets, recording the judgment of the listeners on behalf of you and millions of other telephone users.
Targets of the transmission engineer are: your easy understanding of the talker, the naturalness of his voice, and your all-around satisfaction. To score high is one of the feats of Bell System engineering.
BELL TELEPHONE LABORATORIES
EXPLORING AND INVENTING, DEVISING AND PERFECTING FOR CONTINUED IMPROVEMENTS AND ECONOMIES IN TELEPHONE SERVICE