The project that I'm posting here today is an analog line level audio signal processor that derives a center channel signal from the left and right channel signals of conventional stereo recording. The derived center channel signal is to be reproduced by a loudspeaker system positioned in the front of a listening area in the middle between the conventional left and right channel loudspeaker systems.
This project is somewhat more complex than I might usually do and requiring nineteen dual op amps, TL072. For that reason, three of the figures that are attached to this post, Figures 2, 3 and 5, show sub-circuits of the processor. Attached Figure 6 shows interconnection of the sub-circuits.
Also attached is five pages of text explaining the design and the improvement provided compared to a "derived" center channel consisting of the summation of left and right channel signals.
Attached Figures 1 and 4 are included for explaining the methodology. A parts list and photo of the completed project constructed on socket board are also attached.
Regards,
Pete
This project is somewhat more complex than I might usually do and requiring nineteen dual op amps, TL072. For that reason, three of the figures that are attached to this post, Figures 2, 3 and 5, show sub-circuits of the processor. Attached Figure 6 shows interconnection of the sub-circuits.
Also attached is five pages of text explaining the design and the improvement provided compared to a "derived" center channel consisting of the summation of left and right channel signals.
Attached Figures 1 and 4 are included for explaining the methodology. A parts list and photo of the completed project constructed on socket board are also attached.
Regards,
Pete
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