IEC TS 60318-7:2011
Electroacoustics - Simulators of human head and ear - Part 7: Head and torso simulator for acoustic measurement of hearing aids
IEC/TS 60318-7:2011(E) describes a head and torso simulator (manikin) intended for the measurement of air-conduction hearing aids in the frequency range from 100 Hz to 10 000 Hz. The device consists of a head mounted on a torso that extends to the waist. The head is equipped with simulated pinnae and with cylindrical cavities having acoustic impedance terminations and microphones located at positions corresponding to those of the eardrums in a median human adult. It has been designed to provide acoustic diffraction similar to that encountered around the median human head and torso. The device with its present pinna simulator, however, is not suitable for the measurement of all types of hearing aids. For example, most in-the-ear (ITE) and completely-in-the-canal (CIC) hearing aids cannot be measured correctly. The manikin is specified in terms of both, its geometrical dimensions and its acoustical properties. IEC/TS 60318-7:2011 has been developed as a revision of IEC/TR 60959 (1990). The main changes, as compared to the technical report, are the insertion of maximum permitted expanded measurement uncertainties and additional references in the Bibliography. A future IEC Standard which will include additional models of head and torso simulators for hearing aid measurements is planned.
IEC/TS 60318-7:2011(E) describes a head and torso simulator (manikin) intended for the measurement of air-conduction hearing aids in the frequency range from 100 Hz to 10 000 Hz. The device consists of a head mounted on a torso that extends to the waist. The head is equipped with simulated pinnae and with cylindrical cavities having acoustic impedance terminations and microphones located at positions corresponding to those of the eardrums in a median human adult. It has been designed to provide acoustic diffraction similar to that encountered around the median human head and torso. The device with its present pinna simulator, however, is not suitable for the measurement of all types of hearing aids. For example, most in-the-ear (ITE) and completely-in-the-canal (CIC) hearing aids cannot be measured correctly. The manikin is specified in terms of both, its geometrical dimensions and its acoustical properties. IEC/TS 60318-7:2011 has been developed as a revision of IEC/TR 60959 (1990). The main changes, as compared to the technical report, are the insertion of maximum permitted expanded measurement uncertainties and additional references in the Bibliography. A future IEC Standard which will include additional models of head and torso simulators for hearing aid measurements is planned.
L'IEC 60318-7:2022 décrit un simulateur de tête et de torse, ou mannequin, destiné au mesurage des sources sonores placées à proximité de l'oreille dans la plage de fréquences de 100 Hz à 16 000 Hz. Le mannequin décrit dans le présent document est destiné uniquement aux mesures acoustiques aériennes. Il n'est pas adapté aux mesures qui dépendent des voies de transmission des vibrations telles que la conduction osseuse, ni aux mesures qui exigent la simulation d'os ou de tissu. Le présent document définit le mannequin à la fois par ses dimensions géométriques et par ses propriétés acoustiques. Seuls les mannequins conformes aux deux ensembles de spécifications sont conformes au présent document. L'IEC 60318-7:2022 annule et remplace l'IEC TS 60318-7:2017. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'IEC TS 60318 7:2017: a) modification du titre; b) extension du domaine d'application aux sources sonores à proximité de l'oreille.
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