Speech-in-noise audiometry has potential application as a low-cost, self-screening test for sensorineural hearing loss. To realize this potential, the influence of variations in audio equipment and listening environment need assessment. The present study assessed: 1) the frequency response and distortion produced by a wide range of commercially available audio equipment; 2) the effects of such variations upon test results with normally hearing subjects using a simple, open-set, word-identification test; 3) the effect of distortion on the speech reception threshold using digitally applied distortion; and 4) the reliability of the test in listening environments with different levels of reverberation. In addition, preliminary tests were conducted with elderly listeners. The results indicate that variations in equipment have negligible effects on speech-in-noise audiometry. The only factor that substantially elevated normally hearing listeners’ thresholds was high levels of room reverberation when using loudspeaker presentation. Variations in equipment and environment thus present no significant obstacle to the development of a self-administered audiometric screening test based on speech in noise. Sumario La logoaudiometría en ruido tiene una aplicación potencial como prueba de auto-evaluación a bajo costo para pérdidas auditivas sensorineurales. Para desarrollar este potencial se necesita evaluar la influencia de las variaciones en el equipo de audio y en el ambiente de escucha. El presente estudio evaluó: 1) la respuesta frecuencial y la distorsión producida por una amplia gama de equipos de audio disponibles comercialmente; 2) los efectos de tales variaciones sobre los resultados de las evaluaciones con sujetos normo-oyentes usando una prueba de identificación de palabras de contexto abierto; 3) el efecto de distorsión sobre el umbral de recepción del lenguaje utilizando distorsión digitalmente aplicada; 4) la confiabilidad de la prueba en ambientes para escuchar con diferentes niveles de reverberación. Los resultados indican que las variaciones en el equipo generan efectos despreciables en la logoaudiometría en ruido. El único factor que elevó sustancialmente los umbrales en sujetos normo-oyentes fueron los altos niveles de reverberación de la cabina cuando la presentación se hizo a través de altoparlantes. Las variaciones en el equipo o en el ambiente, por lo tanto, no constituyeron un obstáculo significativo en el desarrollo de una prueba auto-administrada de tamizaje auditivo basada en lenguaje en ruido.
[1]
Ruth Y Litovsky,et al.
The role of head-induced interaural time and level differences in the speech reception threshold for multiple interfering sound sources.
,
2004,
The Journal of the Acoustical Society of America.
[2]
Chaz Yee Toh,et al.
Effects of reverberation on perceptual segregation of competing voices.
,
2003,
The Journal of the Acoustical Society of America.
[3]
Jayne B Ahlstrom,et al.
Benefit of modulated maskers for speech recognition by younger and older adults with normal hearing.
,
2002,
The Journal of the Acoustical Society of America.
[4]
R. Plomp.
Noise, Amplification, and Compression: Considerations of Three Main Issues in Hearing Aid Design
,
1994,
Ear and hearing.
[5]
H S Colburn,et al.
Binaural sluggishness in the perception of tone sequences and speech in noise.
,
2000,
The Journal of the Acoustical Society of America.
[6]
John F. Culling,et al.
Effects of simulated reverberation on the use of binaural cues and fundamental-frequency differences for separating concurrent vowels
,
1994,
Speech Commun..
[7]
H. Levitt.
Transformed up-down methods in psychoacoustics.
,
1971,
The Journal of the Acoustical Society of America.
[8]
H. Kucera,et al.
Computational analysis of present-day American English
,
1967
.
[9]
G F Smoorenburg,et al.
Speech reception in quiet and in noisy conditions by individuals with noise-induced hearing loss in relation to their tone audiogram.
,
1989,
The Journal of the Acoustical Society of America.
[10]
A. M. Mimpen,et al.
Improving the reliability of testing the speech reception threshold for sentences.
,
1979,
Audiology : official organ of the International Society of Audiology.
[11]
T. Houtgast,et al.
A review of the MTF concept in room acoustics and its use for estimating speech intelligibility in auditoria
,
1985
.
[12]
Tammo Houtgast,et al.
Development and validation of an automatic speech-in-noise screening test by telephone
,
2004,
International journal of audiology.
[13]
H. Fletcher,et al.
The Perception of Speech and Its Relation to Telephony
,
1950
.