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Wednesday, July 10 • 15:50 - 16:10
A CANADIAN VERSION OF THE DIGIT TRIPLETS TEST

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Of all the stimuli used for speech-in-noise tests, digits have received a particular attention as stimuli because they are highly familiar words to all age groups, including populations learning a new language. The Digit Triplets Test (DTT; Smits et al., 2004) was originally developed in the Dutch language as an automatic self-screening test. The test uses an adaptive procedure to find the speech recognition threshold in noise, which corresponds to the signal-to-noise ratio at which the digit triplets are correctly identified 50% of the time. The DTT has been adapted in different languages and can be administered over the phone, the internet, or smartphones. Digits triplets (e.g., 4-1-8) are presented in a background noise and the listener enters the digits heard on a keypad. A Canadian French and English version of the DTT has been developed in a collaborative effort between the University of Ottawa and the University of Toronto (CDTT). The digits were recorded in both languages from two fluently bilingual adult talkers (one male, one female). The recordings were then processed and optimized, according to the ICRA recommendations (2015) and ISO standard on speech audiometry (ISO 8253-3:2012). A speech-shaped noise was developed for each language-talker combination. This presentation will describe the development stages of the CDTT. Data obtained with normal hearing adults and school-aged children using the CDTT software will be presented, as well as some metrics and characteristics of the test (e.g., time of the test, test-retest reliability, etc.). Some details about the required hardware will also be presented for laptop implementation. The CDTT requires little practice and can be quickly administered, making it ideal for measuring speech-in-noise performance with many populations, including in children or non-native speakers of French or English.

Moderators
JL

Josée Lagacé

Associate Professor, University of Ottawa
CL

Chantal Laroche

Full Professor, University of Ottawa

Authors

Wednesday July 10, 2019 15:50 - 16:10 EDT
Outremont 6
  T09 Audiology… & comm. in noise, SS02 Dvlp of sp tests for clin & audit ftns …