Device for compensating reproduction errors in an electroacoustic transducer
US4675835A · kind A · utility
Inventor
Key dates
| Filing date | Nov 28, 1984 |
| Grant date | Jun 23, 1987 |
| Priority date | — |
| Expiry date | Nov 28, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R3/04
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In order to compensate reproduction errors in electroacoustic transducers (W), for example electrodynamic loud-speakers, microphones and pickup systems, computer circuits are used. In a digital computer circuit, the electrical input signals (U.sub.1 ) are converted into altered output signals (U.sub.2) according to the inherent properties of the transducer (W), stored in a memory (PROM), with the aid of a programme, which is likewise stored. When analogue computer circuits are used, the complex inherent response of the converter (W) in respect of the amplitude/frequency response and phase/frequency response is approximated mathematically in a closed, inverse form, and the resulting function is simulated with the aid of integrators (B), summing elements (S), inverters (I) and adjusting members (P).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.