ANSI/ASA S3.2-2009

This standard is a revision of ANSI S3.2-1989 (R 1999) American National Standard Method forMeasuring the Intelligibility of Speech over Communication Systems. The standard provides threealternative sets of lists of English words to be spoken by trained talkers over the speechcommunication system to be evaluated. The selection of the particular set of word lists depends uponthe purpose and constraints of the test situation. Trained listeners record the words they hear. Thefraction of the words they identify correctly is the measure of the intelligibility of speech over thesystem. The system may consist of the air and the room or outdoors in face-to-face communications;the equipment and environments used in telephony, public address systems, or ordinary radio; orcomplex systems of environment, equipment, and air, wire, fiber, radio, and water paths used in somemilitary, space, remote, or emergency communications. The standard specifies test materials thathave been thoroughly validated. The standard also specifies methods for selecting and training thetalkers and listeners; for designing, controlling, and reporting the test conditions; and for analyzing andreporting the test results.

This product replaces:ANSI/ASA S3.2-1989(R1995) - American National Standard Method for Measuring the Intelligibility of Speech over Communication Systems

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ANSI/ASA S3.2-2009
ANSI/ASA S3.2-1989(R1995)

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