Module 7 - Speech in Noise Testing

What are we specifically testing?

speech perception

Speech Perception

transformation of an acoustic signal transmitted from a speaker to an intended communicative message heard by a listener

CNC

Consonant-Nucleus-Consonant

◦ all have a consonant, a vowel sound, and a consonant

◦ scored by phonemes correct: either one, two, or three correct

◦ 10 lists of 50 words

AzBio Test

list of 20 sentences, 15 versions of the list

scored by words correct

4 different talkers, two female and two male

• varied in pitch and speed

BKB

Bamford-Kowel-Bench

delivered at different SNR ratios

5 years and up

8 equivalent list pairs for estimating SNR loss

noise and speaker on same channel and on different channel

• can do same speaker

• can do different speaker

less complex sentences than QuickSin

norms for children, norms for adults, and norms for CI users

CRISP

Children's Realistic Index of Speech Perception

assesses how well children understand speech in the presence of competing noise

enables presentation of target words in presence of varying noise around child's head

manual version and computer game version

HINT-C/HINT

HINT-C for children

evaluates functional hearing in quiet and in noise

normative data for normal hearing peers

problem with this test is that it has a high ceiling effect

• very easy to reach 100%

so this test is rarely used and not produced anymore

LNT

Lexical Neighborhood Test

open-set test of monosyllabic words

25 lexically easy words, also a hard version

administered via tape

scored by both phonemes correct and number of words correct

MLNT

Multi-Syllabic Lexical Neighborhood Test

open-set test of multi-syllabic word

12 lexically easy words and 12 lexically hard words

administered via tape

scored by both number of words correct and number of phonemes correct

Iowa Sound Quality Test

12 years and up

6 categories of sound: adult voices, children's voices, everyday sounds, music, and speech in noise

each category has 16 sound samples

subject listens to sound presented at 70 dBSPL from a sound speaker at 0 degrees azimuth

using a computer, they rate clearness of sound from 0-100