Electro-acoustic impedance bridges
US4079198A · kind A · utility
31Cited by
4References
22Claims
0Family size
Inventor
Key dates
| Filing date | Jul 21, 1976 |
| Grant date | Mar 14, 1978 |
| Priority date | — |
| Expiry date | Jul 21, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01H15/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An electro-acoustic impedance bridge for measuring the acoustic impedance of the human ear over a predetermined frequency range compares the magnitude and phase of the variable-frequency sound driving both the human ear and the artificial ear (acoustic coupler).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.