| Patent Number |
Title Of Patent |
Date Issued |
| 7197350 |
Device for determining acoustically evoked brainstem potentials |
March 27, 2007 |
| The invention relates to a device for determining acoustically evoked brain potentials in objective audiometry from electrodes applied to the head of a subject, where the device comprises a plurality of electrodes, i.e. at least one pickup electrode and a reference electrode, to be a |
| 4748598 |
Method to calibrate acoustic instruments, and calibration system |
May 31, 1988 |
| To provide for permanent calibration of an audiometer, for example, to hold the calibration even in case of an interruption of supply voltage, an electrically erasable programmable and reprogrammable read-only memory (EEPROM) (15) receives calibration data in a closed loop by comparing t |
| 4689820 |
Hearing aid responsive to signals inside and outside of the audio frequency range |
August 25, 1987 |
| A hearing aid having a microphone (10), a microcomputer (12) for digital signal processing of digitized microphone signals and an electroacoustic converter (14) for acoustic reproduction of the processed digitized signals, is equipped with at least one further sensor (16, 18) responsive |
| 4471171 |
Digital hearing aid and method |
September 11, 1984 |
| To match the operation of a digital hearing aid directly to user requirements, and to reprogram the hearing aid as the hearing aid and/or user response characteristics change, a digital data processing element (12) processing digitized audio signals is connected to a programmable mem |
| 4395601 |
Modular hearing aid |
July 26, 1983 |
| A hearing aid has a circuit board having conductor strips thereon; first plug-in elements mounted on the circuit board and being electrically connected to selective conductor strips; a plurality of circuit board-supported modular structural units; and second plug-in elements mounted |
