Johan Haspeslagh wrote:
In the Wireless World of 1977 articles there are equations for the
...
where Sum=L+R and Diff=L-R.
I know nothing about the mathematics, and possiby this has nothing to do with your problem, but I want to make a note about the decoder construction, as I did build the WW decoder in the distant past. I had difficulties in getting the gadget working and almost threw it away and thought the whole thing was just crap. This was because there isn't a schematic in the article for the LR/MS matrix at all. As a sound engineer I had been taught that M = L + R and S = L - R ...and built the LR/MS matrix according to that. The result of the decoding was a total mess and all directions were completely wrong. I got it right only after I understood that the S signal was actually made by inverting the L signal, not the R, and summing the signals together. The LR/MS matrix is made in the same way in the Elektor, Integrex and Minim decoders: M = L + R S = - (L - R) I guess this is just a practical solution and saves some components. Eero _______________________________________________ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
