Audio apparatus having a karaoke function
US5541999A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 27, 1995 |
| Grant date | Jul 30, 1996 |
| Priority date | — |
| Expiry date | Jun 27, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R5/04
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An audio apparatus having a plurality of modes as a karaoke reproduction to superimpose a sound signal from a microphone on an audio signal from a stereo sound source. A subtracting circuit is provided which obtains the difference between left and right channel signals from the sound source. A first changeover circuit selectively outputs the left and right channel signals to first and second terminals in a combination in accordance with a mode. A second changeover circuit is connected to the output of the subtracting circuit and to at least one of the left and right channel signals and selectively outputs a subtraction signal and a signal on the line to which the second changeover circuit is connected, to a third terminal. A third changeover circuit selectively outputs signals at the first, second and third terminals to fourth and fifth terminals according to the modes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.