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Line 131: == Storage capacity and playing time == The creators of the CD originally aimed at a playing time of 60 minutes with a disc diameter of 100 mm (Sony) or 115 mm (Philips).<ref name=Immink2 /> Sony vice-president [[Norio Ohga]] suggested extending the capacity to 7499 minutes and 33 seconds<ref name=Immink2 /> to accommodate the recording of [[Wilhelm Furtwängler]] conducting [[Ludwig van Beethoven]]'s [[Symphony No. 9 (Beethoven)\|Ninth Symphony]] at the 1951 [[Bayreuth Festival]].<ref name="PhilBeet" /><ref name="Auto45-6" /> The additional 14-minute playing time required increasing disc diameter. [[Kees Schouhamer Immink]], Philips' chief engineer, however, denies this,<ref name="Imminknature">{{Cite journal \|journal=Nature Electronics \|volume=1

Compact Disc Digital Audio: Difference between revisions