SIGNAL COMBINATION CIRCUIT, SIGNAL PROCESSING CIRCUIT SIGNAL CIRCUIT COMBINATION OF FITTED, stereophonic AUDIO DISPLAY DEVICE SIGNAL PROCESSING CIRCUIT PROVIDED AND AN AUDIO-VISUAL DISPLAY DEVICE WITH THE stereophonic AUDIO DISPLAY DEVICE.

A signal combining circuit (1) comprises a first (2) and second input (3) for the reception of signals with frequencies within the audio frequency spectrum, and an output (4). A signal path between the first input (2) and the output (4) has a first transfer characteristic (H1.H3). A signal path between the second input (3) and the output (4) has a second transfer characteristic (H2.H3). The transfer characteristics show differences which cause a phase shift between signal components that are transmitted via the first signal path and signal components which are transmitted via the second signal path. The transfer characteristics defined by the amplitude-transfer decreases above a predetermined frequency. There exists a frequency decreasing with the phase difference between phase transfer characteristics. For frequencies below said predetermined frequency the amplitude transfer specified by the first transfer characteristic greater that the second transfer characteristic established amplitude transfer. In the through-connection of the first (2) and second input (3) is the amplitude transfer (H1 + H2) .H3) ...