/usr/lib/lv2/ is in calf-plugins 0.0.60-5.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/lv2/calf.lv2/
/usr/lib/lv2/calf.lv2/Analyzer.ttl
/usr/lib/lv2/calf.lv2/BassEnhancer.ttl
/usr/lib/lv2/calf.lv2/CompensationDelay.ttl
/usr/lib/lv2/calf.lv2/Compressor.ttl
/usr/lib/lv2/calf.lv2/Crusher.ttl
/usr/lib/lv2/calf.lv2/Deesser.ttl
/usr/lib/lv2/calf.lv2/Emphasis.ttl
/usr/lib/lv2/calf.lv2/EnvelopeFilter.ttl
/usr/lib/lv2/calf.lv2/Equalizer12Band.ttl
/usr/lib/lv2/calf.lv2/Equalizer30Band.ttl
/usr/lib/lv2/calf.lv2/Equalizer5Band.ttl
/usr/lib/lv2/calf.lv2/Equalizer8Band.ttl
/usr/lib/lv2/calf.lv2/Exciter.ttl
/usr/lib/lv2/calf.lv2/Filter.ttl
/usr/lib/lv2/calf.lv2/Filterclavier.ttl
/usr/lib/lv2/calf.lv2/Flanger.ttl
/usr/lib/lv2/calf.lv2/Fluidsynth.ttl
/usr/lib/lv2/calf.lv2/Gate.ttl
/usr/lib/lv2/calf.lv2/HaasEnhancer.ttl
/usr/lib/lv2/calf.lv2/Limiter.ttl
/usr/lib/lv2/calf.lv2/MonoCompressor.ttl
/usr/lib/lv2/calf.lv2/MonoInput.ttl
/usr/lib/lv2/calf.lv2/Monosynth.ttl
/usr/lib/lv2/calf.lv2/MultiChorus.ttl
/usr/lib/lv2/calf.lv2/MultibandCompressor.ttl
/usr/lib/lv2/calf.lv2/MultibandGate.ttl
/usr/lib/lv2/calf.lv2/MultibandLimiter.ttl
/usr/lib/lv2/calf.lv2/Organ.ttl
/usr/lib/lv2/calf.lv2/Phaser.ttl
/usr/lib/lv2/calf.lv2/Pulsator.ttl
/usr/lib/lv2/calf.lv2/Reverb.ttl
/usr/lib/lv2/calf.lv2/ReverseDelay.ttl
/usr/lib/lv2/calf.lv2/RingModulator.ttl
/usr/lib/lv2/calf.lv2/RotarySpeaker.ttl
/usr/lib/lv2/calf.lv2/Saturator.ttl
/usr/lib/lv2/calf.lv2/SidechainCompressor.ttl
/usr/lib/lv2/calf.lv2/SidechainGate.ttl
/usr/lib/lv2/calf.lv2/SidechainLimiter.ttl
/usr/lib/lv2/calf.lv2/StereoTools.ttl
/usr/lib/lv2/calf.lv2/TapeSimulator.ttl
/usr/lib/lv2/calf.lv2/TransientDesigner.ttl
/usr/lib/lv2/calf.lv2/VintageDelay.ttl
/usr/lib/lv2/calf.lv2/Vocoder.ttl
/usr/lib/lv2/calf.lv2/Wavetable.ttl
/usr/lib/lv2/calf.lv2/XOver2Band.ttl
/usr/lib/lv2/calf.lv2/XOver3Band.ttl
/usr/lib/lv2/calf.lv2/XOver4Band.ttl
/usr/lib/lv2/calf.lv2/calf.so
/usr/lib/lv2/calf.lv2/calflv2gui.so
/usr/lib/lv2/calf.lv2/manifest.ttl
/usr/lib/lv2/calf.lv2/presets-Filter.ttl
/usr/lib/lv2/calf.lv2/presets-Flanger.ttl
/usr/lib/lv2/calf.lv2/presets-MonoCompressor.ttl
/usr/lib/lv2/calf.lv2/presets-Monosynth.ttl
/usr/lib/lv2/calf.lv2/presets-Organ.ttl
/usr/lib/lv2/calf.lv2/presets-Reverb.ttl
/usr/lib/lv2/calf.lv2/presets-Wavetable.ttl