Audio transmitting and receiving system
US4056683A · kind A · utility
16Cited by
5References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 29, 1975 |
| Grant date | Nov 1, 1977 |
| Priority date | — |
| Expiry date | Sep 29, 1995 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B14/04
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A system for transmitting and receiving audio information includes an audio response unit for reading out pre-recorded digital audio information and editing the digital audio information in digital signal form. A transmitter is provided for transmitting the edited digital audio information, and a converter is provided at the receiving side for converting the transmitted digital audio information into an analog audio signal. One feature of the invention is that the announcer audio information in digital form may be mixed with the pre-recorded audio information in digital signal form.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.