However , since the late 1990s the use of software has been increasing .
In the genre 's early days , hardware electronic musical instruments were used and the focus in production was mainly on manipulating MIDI data as opposed to manipulating audio signals .
Since the late 1990s the use of software has been increasing .
In the genre 's early days , hardware electronic musical instruments were used and the focus in production was mainly on manipulating MIDI data as opposed to manipulating audio signals .