1. EFFECTS OF AGE AND HEARING LOSS ON RECOGNITION OF TIME-COMPRESSED SPEECH J.J. Barajas (1,2,3), F. Zenker (1,3), A.B. Carballo González (3) and R. Fernández Belda (1,3) (1) Clinica Barajas, (2) Universidad de La Laguna, (3) Fundación Dr. Barajas SANTA CRUZ DE TENERIFE - CANARY ISLANDS - SPAIN Universidad de La Laguna IAPA 2010 Symposium 19-22 September, Krakow, Poland

3. Facts About Speech Communication Normal Conversational Rate: 140 to 180 words per minute (wpm) TV newsreades can easily exceed 210 wpm

4. I s = Sampling interval I d = Discard interval Time Compression Ratio: Rc = [I d / (I d + I s )] 12345678 135 7 I s I d Compression Ratio (%) Sampling Interval (msec) Discard Interval (msec) 000 5018.018 6012.018 707.718 Time-Compressed Speech Test

5. Cárdenas de, M.R. y Marrero V. (1994). Cuaderno de Logoaudiometría Cuadernos de la Universidad Nacional de Educación a Distancia. Time-Compressed Speech Test 25 Word per list 4 list of words (0%, 50%, 60%, 70%) Phonetically Balanced Bisyllabic Words 40 dB re: Spondee Threshold Diotic Testing

6. /leyes/ Waveforms Analysis

7. Wideband Spectrogram Pitch Analysis /leyes/ 0 Hz 5.5 kHz 0% 50% 60% 70%

8. Wideband Spectrogram Formant Strucuture Analysis 0 Hz 5.5 kHz 0% 50% 60% 70% /leyes/

9. Subjetcs 73 Subjects WR >80% Age: 18-78 years old. Group 1 (N= 26): Normal Hearing (NH). Group 1 (N= 26): Normal Hearing (NH). Group 2 (N=20): Flat Hearing Loss (FHL). Group 2 (N=20): Flat Hearing Loss (FHL). Group 3 (N=15): High Frequency Hearing Loss (HFL). Group 3 (N=15): High Frequency Hearing Loss (HFL). Group 4 (N=12): Hearing Aid (HA). Group 4 (N=12): Hearing Aid (HA).

10. RESULTS

11. Overall Time-Compressed Speech Performance by Group (n=73) CORRECT RECOGNITION (%) NH FHL HFHL HA Normal Hearing Flat Hearing Loss High Frequency Hearing Loss Hearing Aids

12. NH FHL HFHL HA Time-Compressed Speech Performance by Compression Ratio and Hearing Group 0% Compression50% Compression 60% Compression70% Compression Correct Recognition (%) NH FHL HFHL HA

13. Correct Recognition (%) PTA in dB HL 0% Compression 50% Compression 60% Compression70% Compression Regression Analyses

14. Correct Recognition (%) Age in Years 0% Compression Percent correct recognition as a function of age group and compression rate

15. Correct Recognition (%) Age in Years 0% Compression 50% Compression Percent correct recognition as a function of age group and compression rate

16. Correct Recognition (%) Age in Years 0% Compression 50% Compression 60% Compression Percent correct recognition as a function of age group and compression rate

17. Correct Recognition (%) Age in Years 0% Compression 50% Compression 60% Compression 70% Compression Percent correct recognition as a function of age group and compression rate

18. Percentage Recognition as a Function of Age Group and Pure Tone Audiometry 0% Compression50% Compression 60% Compression70% Compression

19. In all subjects recognition performance decreased with the difficulties of the task, age and hearing loss. In all subjects recognition performance decreased with the difficulties of the task, age and hearing loss. Temporal processing is affected in individuals with flat hearing loss and hearing aids users. Temporal processing is affected in individuals with flat hearing loss and hearing aids users. Audibility provided by Hearing Aids is independent of Temporal Processing Mechanism. Audibility provided by Hearing Aids is independent of Temporal Processing Mechanism. The clinical use of this test requiere to take in account the age, type and degree of the hearing loss. The clinical use of this test requiere to take in account the age, type and degree of the hearing loss. CONCLUSIONS

20. THANK YOU (1)Clínica Barajas (2) Fundación Canaria Dr. Barajas para la Prevención e Investigación de la Sordera (3) CREDA Jordi Perelló (4) Universidad de La Laguna SANTA CRUZ DE TENERIFE - CANARY ISLANDS - SPAIN Universidad de La Laguna EFFECTS OF AGE AND HEARING LOSS ON RECOGNITION OF TIME-COMPRESSED SPEECH J.J. Barajas (1,2,3), F. Zenker (1,3), A.B. Carballo González (3) and R. Fernández Belda (1,3)