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ANSI/ASA S3.2-2020

Method for Measuring the Intelligibility of Speech over Communication Systems

This standard specifies a method for subjectively evaluating the speech intelligibility of communication systems. The standard specifies validated English word lists for performing the tests. The standard also specifies methods for selecting and training the talkers and listeners, for designing, controlling, and reporting the test conditions, and for calculating the intelligibility score, and for analyzing and reporting the test results.

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