Recording medium recorded in data structure capable of editing additional data related to audio data, method and apparatus of recording/reproducing thereof

PURPOSE: A recording media, recording/reproduction method are provided to make recording/edition/reproduction of additional data easily by recording audio data and additional data related with audio data at a same basic recording unit. CONSTITUTION: An audio signal processor(304) formats audio data and forms a data pack and then generates an audio pack coding the data pack formed. An independent audio objective unit(AOBU) to be editable as basic recording unit is generated gathering at least one audio pack generated. A RTI(Real-time Text Information) signal processor(308) formats RTI data which additional data is recorded and forms data pack and generates RTI pack coding the data pack formed. A multiplexer/reverse multiplexer(310) generates new AOBU including RTI pack supplied from the RTI signal processor(308) at a previously decided position within AOBU supplied from the audio signal processor(304). A recording/reproduction controller(312) records at a recording media(314) with new AOBU unit. When regenerating, the recording/reproduction controller(312) reads and outputs data from the recording media(314) with new AOBU unit and supplies it to the multiplexer/reverse multiplexer(310). The multiplexer/reverse multiplexer(310) supplies it to the RTI signal processor(308) if pack of AOBU which is read and output is the RTI pack and to the audio signal processor(304) if the audio pack.