Determination of data concerning a person's auditory capacity
First Claim
1. A method of sensing data relevant to events occurring in an internal ear, said method comprising inputting coherent electromagnetic waves from an interferometer, via a focusing objective associated therewith and directly arranged thereon, directly into an optical microscope, beaming said waves through said optical microscope onto at least one of an ossicle of the middle ear and the ear-drum, wherein reflected waves interfere with said input waves, and determining from a resulting measured signal an internal ear component thereof by deducting a middle ear component, said middle ear component being determined from at least one of model data and data gained from experience and representing movement of the ossicles in the audible range.
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Abstract
The invention concerns a device for determining data on auditory capacity, the device having preferably non-contact means for measuring vibrations of the middle-ear ossicles (22, 23, 24) and/or the tympanic membrane (21) by means of electromagnetic waves. The electromagnetic waves used for the measurement are input by means of a microscope (3), in particular an optical microscope (3). This microscope can be modular in design, and a module (5) can be provided for the input of a laser beam (9). The invention also concerns a method of determining data on auditory capacity, the method calling for the vibration of the middle ear and/or the eardrum to be measured by means of electromagnetic waves and, from the measurement signals thus obtained, the contributions to the total signal by the middle ear and/or the eardrum determined in at least one processing step.
23 Citations
22 Claims
- 1. A method of sensing data relevant to events occurring in an internal ear, said method comprising inputting coherent electromagnetic waves from an interferometer, via a focusing objective associated therewith and directly arranged thereon, directly into an optical microscope, beaming said waves through said optical microscope onto at least one of an ossicle of the middle ear and the ear-drum, wherein reflected waves interfere with said input waves, and determining from a resulting measured signal an internal ear component thereof by deducting a middle ear component, said middle ear component being determined from at least one of model data and data gained from experience and representing movement of the ossicles in the audible range.
- 4. A device for sensing data relevant to events occurring in an internal ear by non-contact vibration measurement of ossicles in at least one of a middle ear portion and an ear-drum with coherent electromagnetic waves, said device comprising an optical microscope, an interferometer and analysis means for analyzing signals or data obtained by use of said device, wherein electromagnetic waves from said interferometer are input directly into said microscope via a focusing objective associated with said interferometer, arranged directly by said microscope, aimed at at least one of the ossicles and ear-drum and are guidable by said microscope after reflection back into said interferometer.
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14. A method of sensing aural data with a device comprising means for producing electromagnetic waves;
- means for measuring vibrations of at least one of a middle ear portion and an eardrum of an ear caused by said electromagnetic waves; and
a microscope which permits passage of said waves into said ear, which method comprises transmitting electromagnetic waves into an inner portion of the ear, measuring vibrations of at least one of the middle ear and the eardrum due to said electromagnetic waves, converting said measured vibrations into a signal composed of an input signal component, a middle ear component and an internal ear component, and determining from said signal at least one of the middle ear and internal ear components. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22)
- means for measuring vibrations of at least one of a middle ear portion and an eardrum of an ear caused by said electromagnetic waves; and
Specification