It basically directed the sounds onto a diaphragm that vibrated a needle that essentially engraved the sound on tinfoil that was wrapped around the cylinder.
Ne parim, ajo i drejtonte tingujt  drejt nje diafragme ku keto dridhnin nje gjilpere qe ne thelb e gdhendte kete vale ne nje leter alumini qe ishte e mbeshtjelle rreth cilindrit.