contain any sounds, only instructions to play them. To play such files, sample-based MIDI synthesizers use recordings of instruments and sounds stored in a file or ROM chip. SoundFont-compatible synthesizers allow users to use SoundFont banks with custom samples to play their music. A SoundFont bank contains base samples in PCM format (the audio data format most commonly used in WAV containers) mapped to sections on a musical keyboard. A SoundFont bank also contains other music synthesis parameters such as loops, vibrato effect, and velocity-sensitive volume changing. SoundFont banks can conform to standard sound sets such as General MIDI, or use other wholly custom sound-set definitions like Roland GS and Yamaha XG. SoundFont creation software ( format) Several editors are available: Vienna from Creative Labs, requiring a particular sound card (such as Sound Blaster) Viena (with a single "n"), created in 2002 Swami is a collection of free software for editing and managing musical instruments for MIDI music composition, used mainly under Linux Polyphone, free editor for Windows, Mac OS X and Linux created in 2013 See also DLS format FluidSynth General MIDI Gravis Ultrasound List of music software SFZ (file format) Software synthesizer TiMidity++ WildMIDI References External links SoundFont 2.04 specification Audio codecs Audio software Software synthesizers MIDI standards