SlackBuildsOrg/audio/calf

Calf Studio Gear is an audio plug-in pack for LV2 and JACK
environments under Linux operating systems. The suite contains
lots of effects (delay, modulation, signal processing, filters,
equalizers, dynamics, distortion and mastering effects), instruments
(SF2 player, organ simulator and a monophonic synthesizer) and tools
(analyzer, mono/stereo tools, crossovers). Calf Studio Gear aims for a
professional audience.

By default, the package is built with SSE support if the host CPU
supports SSE. If building for another host, you can set SSE=yes or
SSE=no in the environment to override the autodetection.

Optional dependency: lash. This will be autodetected at build time.

This package uses POSIX filesystem capabilities to execute with
elevated privileges (required for realtime audio processing). This
may be considered a security/stability risk. Please read
http://www.slackbuilds.org/caps/ for more information. To disable
capabilities, pass SETCAP=no to the script.