摘要:
An in-the-ear hearing aid comprises a plug (1) for arrangement in the ear channel and having a shell-like wall facing the interior of the ear channel and an exterior faceplate (2) which together define a generally closed cavity (3), in which the individual components of the hearing aid are arranged. An acoustical link in th form of a hose or tube piece (13) is provided between an orifice (14) at the external side of the part of the wall of the plug (1) facing the interior of the ear channel and the residual volume (12) of the internal cavity of the plug (1) and forms together with said residual volume (12) an approximated acoustical circuit having a resonance frequency in the region of the first voice sound formants of the user. Thereby a significantly reduces occlusion effect can be obtained in a simple way in a completed hearing aid.
摘要:
The application relates to an in-situ method to measure and correct or adjust the sound signal presented to the eardrum by means of a hearing aid and a hearing aid employing such a method. The hearing aid comprises at least one microphone (1), at least one digital signal processor (2) for transforming the microphone signal into a transformed signal according to a desired transformation function, a receiver (3), a sensing means (4) for sensing the sound signal appearing in front of the eardrum and at least one comparison means (5). A model of the electroacoustic system of the ear and the hearing aid is established and stored in the hearing aid, which model simulates the sound signal in the earcanal in front of the eardrum. This model is adapted in response of an error signal generated in case the difference between the representation of the sensed signal and the simulated sound signal is above a predetermined threshold.
摘要:
The invention relates to a tinnitus masking device with one or more signal generators, an adjustable amplifier (2) and one or two electroacoustic converters (3) to convert electrical into acoustic signals and a voltage source, in which at least one of the signal generators (1) generates a continuously repeated pure sinusoidal sound signal slowly extending over the audible frequency range, the cycle time of which can be adjusted between 0.1 and 1 000 s.
摘要:
A binaural digital hearing aid system comprises two hearing aid units (1, 2) for arrangement in a user's left and right ear, respectively. Each unit comprises input signal transducer means (3r, 3l), A/D conversion means (4r, 4l), digital signal processing means (5r-13r, 5l-13l), D/A conversion means (14r, 14l) and output signal transducer means (15r, 15l). A bi-directional communication link (7) is provided between the units. The digital signal processing means of each unit is arranged to affect a substantially full digital signal processing including individual processing of signals from the input transducer means of the actual unit and simulated processing of signals from the input transducer means of the other unit as well as binaural signal processing and includes at least a first digital signal processor part (5r, 5l) for processing said internally supplied signal, a second digital signal processor part (6l, 6r) for processing the signal supplied via said communication link (7) and a third digital signal processor part (9r, 9l) to effect common binaural digital signal processing of information derived from the signals processed in said first and second digital signal processor parts, said second digital signal processor part (6l, 6r) in each unit simulating the first digital signal processor part (5l, 5r) in the other unit with respect to adjustment parameters controlling the performance of said first signal processor part in said other unit.
摘要:
La présente invention se rapporte à un dispositif de masquage du tintement d'oreilles comportant un ou plusieurs générateurs de signaux, un amplificateur réglable (2) et un ou deux transducteurs électroacoustiques (3) pour la conversion de signaux électriques en signaux acoustiques, ainsi qu'une source de tension. Dans ce dispositif, au moins un des générateurs de signaux (1) engendre un signal sonore sinusoïdal pur se répétant en continu et balayant lentement la gamme des fréquences acoustiques, dont la durée de cycle est réglable entre 0,1 et 1000 s.