Fig.3 – The waves cut by the new method are in a vertical rather than a horizontal plane (Harrison, 1932)

Published at 800 × 432 in Things I learned on Phono EQ curves, Pt. 4
Fig.3 - The waves cut by the new method are in a vertical rather than a horizontal plane (Harrison, 1932)

source <cite>A New System of Sound Recording<cite> by HC Harrison <a href=httpsworldradiohistorycomArchive Bell Laboratories Record30sBell Laboratories Record 1932 07pdf>Bell Laboratories Record<a> Vol10 No 11 July 1932 p392<br>横溝記録と縦溝記録の比較音溝の振幅が大きくなっても縦溝の場合高密度で記録可能であることを説明する図版<br>comparison of lateral vertical cuts showing the vertical cut with high density

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