What is an SFZ file? Audio sample definition file saved in the SFZ format and used to define instruments; contains opcodes that define audio sample attributes, such as their map location across a standard MIDI keyboard and how notes will respond to velocity; also includes the default path used to locate the collection of samples, most likely .WAV , .AIFF , .MP3 , .OGG , or .FLAC files.

More Information Opcodes that are contained in the SFZ file are used for a variety of purposes. They are used to define common values that are applied to regions within a group, define keyboard zones, specify a pitch offset for a group or region, and more. Since the SFZ files are standard and contain opcodes in plain text, you can create a SFZ file from scratch by using a basic text editor, such as Notepad (for Windows) or TextEdit (for OS X).