Long-term Averaged Speech Spectrum. Fundamentals and Clinical Applications.


  • Jonathan Delgado Hernández Fundación Canaria para la Prevención de la Sodera. Santa Cruz de Tenerife. España
  • Franz Zenker Clinica Barajas. Santa Cruz de Tenerife. Spain




averaged speech spectrum, LTASS, ICRA, hearing-aid fitting


One of the goals to in the clinical field of hearing-aid fitting is to achieve a comfortable and intelligible level of listening to speech. To achieve this objective, reference signals based on the average of the speech spectrum have been created with which to evaluate the gain of the hearing aids. Sex, age, location of the microphone or language are variables that influence the recording of this measurement. In this article we review the influence of these factors and present the possible audio-logical and hearing-prosthetic applications of this type of signals.


Download data is not yet available.

        Visibility and Altmetrics


Metrics Loading ...


Cornelisse, LE, Gagné, JS, y Seewald, RC. (1991). Ear level recordings of the long-term average spectrum of speech. Ear Hear. 12, 47-54. https://doi.org/10.1097/00003446-199102000-00006

Byrne D, Dillon H, Tran K. (1994). An interna-tional comparison of long-term average speech spectra. J Acoust Soc Am; 96:2108-2120. https://doi.org/10.1121/1.410152

Cox, RM, y Moore, JN. (1988). Composite speech spectrum for hearing aid gain pre-scriptions. J. Speech Hear. Res.31, 102-107. https://doi.org/10.1044/jshr.3101.102

Byrne, D. (1977). The speech spectrum-Some aspects of its significance for hearing aid seleccion and evaluation. Br. J. Audiol. 11, 40-46. https://doi.org/10.3109/03005367709078831

Pearsons, KS, Bennett, RL, y Fidell, S (1997). Speech levels in varius noise Envi-ronment. EPA Rep. Nº. 600/1-77-025 Envi-ronmental Protection Agency, Washington DC.

Dunn, HK, y White, SD. (1940). Statiscal measurements on conversational speech. J. Acoust. Soc. Am.11, 278-289. https://doi.org/10.1121/1.1916034

Dunn, H. K., Farnsworth, D. W. (1939). Exploration of pressure field around the human head during speech. J. Acoust. Soc. Am. 10, 184-199. https://doi.org/10.1121/1.1915975

Benson, R. W., y Hirsh , I. J.(1953). Some variables in audio spectrometry. J. Acoust. Soc. Am. 25, 499-505. https://doi.org/10.1121/1.1907070

Niemoller, AF., McCornick, I., y Miller, J D.(1974). On the spectrum of spoken Eng-lish. J. Acoust. Soc. Am. 55,461. https://doi.org/10.1121/1.3437924

Byrne , D., y Dilon, H. (1986). The National Acoustic Laboratories'(NAL) new procedure for selecting the gain of frecuency response of hearing aid. Ear Hear. 7, 257-265. https://doi.org/10.1097/00003446-198608000-00007

Tarnoczy, T., y Fant, G. (1954). Some re-marks on the average speech spectrum. Q.P.S.R. Rep. Nº 4, pp. 13-14, Speech Transmission Laboratory, Stockholm.

Pavlovic, CV., Rossi, M., y Espesser, R. (1991). Perceived spectral energy distribu-tions for EUROMO speech and for some synthetic speech. Proccedings of the XII In-ternational Congress on Phonetic Sciences. 5/5, 418-421.

Zenker, F. (2002). La prescripción de la ganancia en la adaptación audioprotésica. Auditio: Revista electrónica de audiología. vol. 1(3), pp. 45-52. https://doi.org/10.51445/sja.auditio.vol1.2002.0018

Zenker F. y Barajas J. (1999). Adaptación de audífonos en función del promedio del espectro de la palabra hablada. Estudio de un caso único. En: Logopedia escolar y clínica. Últimos avances en Evaluación e Intervención. Editor: José Domingo Martín Es-pino, Madrid, Editorial CEPE, pp. 329-336.

Seewald, R., Cornelisse, L., Ramji, K., Siclair, S., Moodie. K., Jamieson, D. (1995). DSL TM for windows: A sofware sys-tem implementation of the desired sensation level (DSL) method for fitting linear gain ans wide-dynamic-range compression hearing in-struments. User's manual. University of Western Ontario.

Fry, GJ. (2002). El examen del audífono digital. [en linea]. Auditio: Revista electrónica de audiología. 1(2), pp. 25-29. DOILATER

Dreschler, WA., Verschuure, H., Ludvigs-en, C., Westermann, S. (2001). ICRA Nois-es: Artificial noise signals with speech-like spectral and temporal propieties for hearing instrument assessment. Audiology. 40: 148-157. https://doi.org/10.3109/00206090109073110

ANSI (1969). ANSI S3.5-1969, American Na-tional Standard Methods for Calculation of the Articulation Index (American National Stand-ards Institute, New York).

Zenker F. (2001). Medidas en oído real me-diante sonda microfónica. Definición y apli-caciones. [en linea]. Auditio: Revista electró-nica de audiología. vol. 1(1), pp. 10-15. https://doi.org/10.51445/sja.auditio.vol1.2001.008

Portada Auditio.


2002-10-01 — Updated on 2021-09-15


How to Cite

Delgado Hernández, J., & Zenker, F. (2021). Long-term Averaged Speech Spectrum. Fundamentals and Clinical Applications. Auditio , 1(3), 41–44. https://doi.org/10.51445/sja.auditio.vol1.2002.0017 (Original work published October 1, 2002)



e-journal of audiology (archive before 2021 only in Spanish)

Similar Articles

1 2 3 4 5 6 7 > >> 

You may also start an advanced similarity search for this article.