Concretely, ukusika kwenziwa kwiframe ephambili efutshane kwaye imijelo ikopiwe, eyenza ukuba ifikelelwe ngokukhawuleza; iframe- echanekileyo yokusika ifuna umfanekiso ophinde ukhowudiwe, ngoko isixhobo sithetha ukuba yeyiphi ofumanayo kunokuba ukhethe ngokucokisekileyo. You set the start and end points on the waveform or the timeline and keep what is between them.