Abstract: A device (1) for insertion into an ear canal of a mammalian subject. The device includes a body (2) having a sound path extending therethough and a tensioned membrane (10) in the sound path. The tensioned membrane has at least one corrugation (12). The device further includes an adjustable member (6) arranged to bear against the membrane to adjust the tension of the membrane and thereby to alter an acoustic response of the sound path. The adjustable member may include a compressible portion (8).

Abstract: A device for insertion into an ear canal of a mammalian subject, including a body, a first adjustable acousto-mechanical portion, a second adjustable acousto-mechanical portion and an adjustment arrangement. The body has at least one sound path extending therethrough. The first adjustable acousto-mechanical portion incudes an adjustable channel forming at least part of the sound path, and the second adjustable acousto-mechanical portion includes an adjustable membrane. The second adjustable acouto-mechanical portion is arranged acoustically in series with the first adjustable acousto-mechanical portion. The adjustment arrangement is configured for simultaneously adjusting the first and second adjustable acousto-mechanical portions to alter an acoustic response of the at least one sound path.

Abstract: Ear terminal comprising a sealing section (2) for arrangement in the meatus (3) of a human, comprising: an inner microphone (M2) having a sound inlet (S2) for being directed, directed into the meatus, an electronics unit (11) coupled the inner microphone (M2) and also being coupled to a power supply (12) as well as an outer microphone (M1) for measuring acoustic signals in the environment.

Abstract: An ear terminal includes a sealing section arranged for use in the ear meatus of a human, with an inner microphone having a sound inlet for being directed into the meatus and an electronic unit including filtering elements coupled to the inner microphone for filtering the signal from the inner microphone, the filtering elements being programmable to transform the signals based on the sounds received in the ear by the inner microphone into sounds having essentially the characteristics of spoken sounds of the wearer of the ear terminal.

Abstract: An apparatus and a method of voice detection and discrimination apparatus for controlling a voice operated system. A protective ear terminal element in the apparatus protects the ear by providing acoustic attenuation. An inner electroacoustic transducer element on an inner side of the ear terminal element detects a first acoustic field and provides a first electronic signal representing the first acoustic field. An outer electroacoustic transducer element on an outer side of the ear terminal element detects a second acoustic field and provides a second electronic signal representing the second acoustic field. An electronics unit is connected with the electroacoustic transducer elements and includes first and second comparison members.

Abstract: Ear terminal and ear terminal system, in which at least one ear terminal includes a sealing section (2) arranged for use in the ear meatus (3) of a human, including an inner microphone (M2) having a sound inlet (S2) for being directed into the meatus (3); an electronic unit (11) including filtering part coupled to the inner microphone for filtering the signal from the inner microphone (M2), the filtering part being programmable to transform the signals based on the sounds received in the ear by the inner microphone (M2) into sounds when combined with the user's own voice, providing a voice sounding natural to the user.

Abstract: An apparatus and a method of voice detection and discrimination apparatus for controlling a voice operated system. A protective ear terminal element (1,2) in the apparatus protects the ear by providing acoustic attenuation. An inner electroacoustic transducer element (M2) on an inner side of the ear terminal element (1,2) detects a first acoustic field and provides a first electronic signal representing the first acoustic field. An outer electroacoustic transducer element (M1) on an outer side of the ear terminal element (1,2) detects a second acoustic field and provides a second electronic signal representing said second acoustic field. An electronics unit (11,E3) is connected with said electroacoustic transducer elements (M1,M2) and comprises first comparison means (27) for comparison of said first and second electronic signals to obtain the difference between said two electronic signals.

Abstract: Ear protecting device with a sealing section for acoustically sealing the meatus of a human, includes a sound generator with a sound outlet for being directed toward the user meatus; an inner microphone with a sound inlet from the meatus, arranged for measuring the resulting sound field in the meatus; connected to an electronics unit including a sound analyser coupled to the inner microphone, for analyzing sound characteristics of the resulting sound field in the meatus, producing analyzed sound characteristics; storing part in the electronics unit for storing measured predetermined sound characteristics of a properly functioning ear protecting device; a comparing part in the electronics unit for comparing the inner microphone analyzed sound characteristics with the stored measured predetermined sound characteristics; indicating part coupled to the comparing part for being activated if the analyzed sound characteristics differ significantly from the predetermined sound characteristics.