ViPER4Android not processing
The issue is found on &quot;audio_effects.conf&quot;, which contains unnecessary things that needs to be removed and some to be changed, in order for it to worked.

For Samsung devices, &quot;audio_effects.conf&quot; is found in /system/etc.


Remove these:
Libraries:
output_session_processing {
  path /vendor/lib/libLifevibes_lvverx.so
}

mysound {
  path /system/lib/libmysound.so
}

myspace {
  path /system/lib/soundfx/libmyspace.so
}

soundalive {
  path /system/lib/libaudiosa.so
}

soundalive_sec {
  path /system/lib/soundfx/libaudiosaplus_sec.so
}

soundbooster_plus {
  path /system/lib/libsamsungSoundbooster_plus.so
}

Effects:
soundalive {
  library soundalive_sec
  uuid cf65eb39-ce2f-48a8-a903-ceb818c06745
}

lmfv {
  library output_session_processing
  uuid 989d9460-413d-11e1-8b0d-0002a5d5c51b
}

fens {
    library output_session_processing
    uuid cbcc5980-476d-11e1-82ee-0002a5d5c51b
}

dha {
  library mysound
  uuid 263a88e0-50b1-11e2-bcfd-0800200c9a66
}

sa3d {
  library myspace
  uuid 3462a6e0-655a-11e4-8b67-0002a5d5c51b
}

soundbooster_plus {
  library soundbooster_plus
  uuid 50de45f0-5d4c-11e5-a837-0800200c9a66
}

Output Session Processing:
output_session_processing {
  music {
      sa3d {}
  }

  ring {
      sa3d {}
  }

  voice_call {
      fens {}
      lmfv {}
  }

  sec_voice_communication {
      fens {}
      lmfv {}
  }
}


Change these:
Libraries:
From:
pre_processing {
  path /vendor/lib/libLifevibes_lvvetx.so
}

To:
pre_processing {
  path /system/lib/soundfx/libaudiopreprocessing.so
}

Effects:
From:
bassboost {
  library soundalive
  uuid a926a540-418a-11e1-b2f1-0002a5d5c51b
}

To:
bassboost {
  library bundle
  uuid 8631f300-72e2-11df-b57e-0002a5d5c51b
}

From:
virtualizer {
  library soundalive
  uuid c747f6a0-418a-11e1-a621-0002a5d5c51b
}

To:
virtualizer {
  library bundle
  uuid 1d4033c0-8557-11df-9f2d-0002a5d5c51b
}

From:
equalizer {
  library soundalive
  uuid c117b70-f97f-11e0-be50-0002a5d5c51b
}

To:
equalizer {
  library bundle
  uuid ce772f20-847d-11df-bb17-0002a5d5c51b
}



For Samsung devices, after doing those things above, also copy the modified &quot;audio_effects.conf&quot; to /system/vendor/etc.