transmitters convert audio and / or video signals into wireless communication signals . smart phones , personal data assistants and / or other audio / video electronic devices are programmed to detect the wireless communications signals and display them to users . a user selects a desired signal and the smartphone receives the signal and converts it into an audio and / or video signal , which is recorded and / or output . the transmitters are connected to or integrated into microphones , televisions , phones , or other video / audio / media sources , converting audio and / or video received from these sources . this allows for ultra - high quality private broadcasts and reception . the smartphone , personal data assistants and / or other audio / video electronic devices programming also allows identification , commenting and bookmarking of received audio / video , transfer of the audio / video to other devices , transcription of the audio , and other manipulation of the received signals . when specified , the device application requires payment before enabling a recording option , protecting the copyrights of a performer / presenter .