Improvements in and relating to Stereo-transmission, Sound recording and Sound-reproducing Systems (Blumlein, 1931)

Published at 1200 × 777 in Things I learned on Phono EQ curves, Pt. 2
Improvements in and relating to Stereo-transmission, Sound recording and Sound-reproducing Systems (Blumlein, 1931)

source <cite><a href=httpswwwpearl hificom06 Lit Archive19 PatentsBlumlein ADStereo UKStereo Patentpdf>Improvements in and relating to Sound transmission Sound recording and Sound reproducing Systems<cite><a> Alan Dower Blumlein GB Patent 394325 1931

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