![Sample our Medicine, Dentistry, Nursing & Allied Health journals, sign in here to start your FREE access for 14 days]({"type":"image" , "src" : "/sda/5944/TOC-Subject-Sample-2021-Medicine-Dentistry-Nursing-Allied-Health.jpg"})
Abstract
The aim of this study was to determine reference peak-to-peak threshold sound pressure levels for air conduction sound transducers using groups of tone bursts as test signals. For this purpose, threshold measurements with five different earphones and a loudspeaker were carried out on groups of 25 young, otologically normal test subjects in the frequency range between 250 Hz and 8000 Hz, following as closely as possible the ISO Preferred Test Conditions. The dependence of the results on repetition rate, type of sound transducer, gender and age of the test subjects, and on reference pure tone thresholds was investigated. The results mainly depend on the reference equivalent sound pressure levels for pure tones of each sound transducer. Together with the results of another study carried out in Denmark, the data of the present study will form the basis for the International Standard ISO 389 Part 6 on reference hearing thresholds for acoustic test signals of short duration.
| Acronyms | ||
| GUM | = | Guide to the expression of uncertainty in measurement |
| IEC | = | International Electrotechnical Commission |
| ISO | = | International Organization for Standardization |
| peRETSPL | = | Peak-to-peak equivalent reference equivalent threshold sound pressure level for signals of short duration, general |
| peRTSPL | = | Peak-to-peak equivalent reference threshold sound pressure level for signals of short duration, general |
| peRETSPL20Hz | = | Peak-to-peak equivalent reference equivalent threshold sound pressure level for signals of short duration at a repetition rate of 20 Hz |
| peRTSPL20Hz | = | Peak-to-peak equivalent reference threshold sound pressure level for signals of short duration at a repetition rate of 20 Hz |
| RETSPLPT | = | Reference equivalent threshold sound pressure level for pure tones |
| RETSPL | = | Standardized reference equivalent threshold sound pressure level for pure tones |
| PTB | = | Physikalisch-Technische Bundesanstalt |
| SD | = | Standard deviation |
| Acronyms | ||
| GUM | = | Guide to the expression of uncertainty in measurement |
| IEC | = | International Electrotechnical Commission |
| ISO | = | International Organization for Standardization |
| peRETSPL | = | Peak-to-peak equivalent reference equivalent threshold sound pressure level for signals of short duration, general |
| peRTSPL | = | Peak-to-peak equivalent reference threshold sound pressure level for signals of short duration, general |
| peRETSPL20Hz | = | Peak-to-peak equivalent reference equivalent threshold sound pressure level for signals of short duration at a repetition rate of 20 Hz |
| peRTSPL20Hz | = | Peak-to-peak equivalent reference threshold sound pressure level for signals of short duration at a repetition rate of 20 Hz |
| RETSPLPT | = | Reference equivalent threshold sound pressure level for pure tones |
| RETSPL | = | Standardized reference equivalent threshold sound pressure level for pure tones |
| PTB | = | Physikalisch-Technische Bundesanstalt |
| SD | = | Standard deviation |
Sumario
El objetivo de este estudio fue determinar el umbral de referencia pico-a-pico de niveles de presión sonora para transductores de sonido por vía aérea, usando grupos de bursts tonales como señales de prueba. Para ésto, se llevaron a cabo mediciones de umbral con cinco diferentes auriculares y un altoparlante, en grupos de 25 jóvenes otológicamente normales como sujetos de prueba, en el rango de frecuencias entre 250 Hz y 6000 Hz y siguiendo tan de cerca como fue posible las condiciones de prueba preferidas de ISO. Se investigó la dependencia de los resultados con base en tasas de repetición, tipo de transductores de sonido, género y edad de los sujetos de la prueba y en los umbrales de referencia con tonos puros. Los resultados dependen fundamentalmente de los niveles de referencia de presión sonora equivalentes para tonos puros de cada transductor de sonido. Junto con estos resultados y con los de otro estudio efectuado en Dinamarca, se conformará la base para los estándares internacionales ISO 389 parte 6, sobre umbrales de audición con señales acústicas de prueba de corta duración.