EntityQ782526· pop 18· linked from 376 articlesquadraphonic soundsound that uses four channels in which speakers are positioned at the four corners of the listening spaceConnections8-track tapeEntityphonograph recordEntityFM broadcastingEntityreel-to-reel audio tapeEntityprecedence effectEntityChicagoEntitySan FranciscoEntityradioEntitysoundEntitysoftwareEntityInternational Standard Book NumberEntityBBCConceptPink FloydEntityWayback MachineEntitySony GroupEntityBéla BartókEntityneologismEntityultrasoundEntityBlu-ray DiscEntityphonographEntityCategoriesAccuracy disputes from July 2025Quadraphonic soundSurround sound