1、 8253-3 20142009 3 ISO 8253-3:2012 Acoustics Audiometric test methods Part 3: Speech audiometry (IDT) 8253-320142009 II 1 - - ( ) - , 4 2 358 3 - 11 2014 1547- 586-. 4 8253-3:2012 . . 3. (ISO 8253-3:2012 Acoustics Audiometric test methods Part 3: Speech audiometry). - , - 5 1.02012 ( 8). ( 1 ) , - .
2、 () - - . , (gost.ru) , 2015 , - 8253-32014 III 1 1 2 . 1 3 . 1 4 4 5 6 6 7 7 8 8 . 8 9 8 10 9 11 9 12 10 13 12 14 12 15 13 16 . 15 17 . 15 18 15 () 18 () . 19 () . 20 D () . 22 () 23 () 28 . 29 8253-320142009 IV . -. , - - ( ), . 8253-32014 1 3 Acoustics. Audiometric test methods. Part 3. Speech au
3、diometry 20151201 1 - . - , , - , . , . , , - . - . , , , -, , , , . , . 2 : 266 . (ISO 266, Acoustics Preferred frequencies) 8253-1 . . 1. - (ISO 8253-1, Acoustics Audiometric test methods Part 1: Basic pure-tone air and bone conduction threshold audiometry) 8253-2 . . 2. (ISO 8253-2, Acoustics Aud
4、iometric test methods Part 2: Sound field audiometry with pure-tone and narrow-band test signals). / 98-3 . 3. (ISO/IEC Guide 98-3, Uncertainty of measurement Part 3: Guide to the expression of uncertainty in measurement (GUM:1995) 60645-1 . . 1. (IEC 60645-1:2001, Electroacoustics Audiological equi
5、pment Part 1: Pure-tone audiometers) 60645-2:1993 . 2. (IEC 60645-2:1993, Audiometers Part 2: Equipment for speech audiometry) 61672-1 . . 1. (IEC 61672-1, Elec-troacoustics Sound level meters Part 1: Specifications) 3 8253-1 8253-2, . 3.1 (speech signal): , . . 8253-320142009 2 3.2 (test item): , ,
6、 . . 3.3 (speech material): , . . 3.4 (open-set test material): -, . 3.5 (closed-set test material): -, . 3.6 (phoneme): . 3.7 () (phoneme class): , . 3.8 (syllable): , , - - . 3.9 (spondee): . 3.10 (logatom): , . . 3.11 (test list): , . 3.12 (set of test items): - . 3.13 (phonemically balanced test
7、 list): - , , . 3.14 (perceptually balanced test list): - , ( ) - - ( ). 18 25 . (, ). 3.15 - (carrier phrase): , -, . 3.16 ( ) (reference recording of speech material, master recording): , - , . 3.17 (speech level): , , 61672-1. , - , . 1) . -, . . - , () , . 8253-32014 3 3.18 TpLeq,(equivalent con
8、tinuous sound pressure level): - T ( 1t 2t ) p - 0p (0p = 20 ), (), 202,211lg10pdttpTLtteqTp. (1) , - p . 61672-1 - . , 10,pAL - , , 10 . ISO/TR 25417, 2.3 3.19 () (speech detection threshold level): , 50 % - . 3.20 () (speech recognition score): ( ) - ( ) . 3.21 () (maximum speech recognition score
9、): . 3.22 () (speech recognition threshold level): - /, 50 %, . . 3.23 () (reference speech recognition threshold level): , - 18 25 . 3.24 () (optimum speech level): ( - ) , 3.25 () (half-optimum speech level): - , . 3.26 (speech recognition curve): , - . 3.27 (reference speech recognition curve): , - , 18 25 , . 3.28 () (hearing level for speech): - - . 3.29 (competing sound): , - . 3.30 (competing sound pressure level):
