Electroacoustic music for double bass can be classified into the following two types of repertoire: real-time/interactive computer music or tape music. Real-time/interactive computer music is the newer of the two types and involves the algorithmic generation of electronic sounds in live performance. Pre-recorded electronic sounds are usually avoided, and instead, the sound of live input is used as the source material for electronic sounds. A computer is used for capture, processing and synthesis, and the software is usually written in the MAX/MSP environment. The second category, tape music, is the older of the two types of electroacoustic music for the double bass. Tape music for double bass involves the pairing of the live double bass with pre-recorded electronic sounds. In modem electroacoustic concerts, the modem media formats, CD Audio and MPEGl-Layer 3 (mp3), are used to play back the pre-recorded sounds, but the electroacoustic community continues to call this category "tape" music. The term "fixed media" is often used to refer to the tape music category, as well.
Baguyos, Jeremy C., "Literature and Performance of Music for Double Bass and Tape" (2008). Music Faculty Publications. 7.