biological check

6.80  biological check; diagnostic listening. Listening and perceptually evaluating an acoustic signal to determine if the signal sounds normal. Annotation         Typically conducted on an audiometer on a daily basis....

technical listening

6.79  technical listening. Analytical listening to sound for the purpose of assessing its perceived character or sound quality. Annotation         The training program in developing technical listening skills is called...

synthetic speech

6.78  synthetic speech. Sentences which are purposely and systematically diverted from standard rules of grammar and syntax to decrease the ability to use contextual cues. Any speech sound (phoneme) that is generated by a...

summation tone

6.77  summation tone. Combination tone with a frequency equal to the sum of the frequencies of two primary tones or of their harmonics. See...

speech transmission index

6.76  speech transmission index. Physical method for measuring the quality of speech-transmission channels accounting for nonlinear distortions as well as distortions of time. Abbreviation, STI. Annotation 1      See IEC...