Equalizer bassboost, virtualizer 작동 문제.

Question

     	bassBoost = new BassBoost(0, audioSessionId);
        bassBoost.setEnabled(true);

        virtualizer = new Virtualizer(0, audioSessionId);
        virtualizer.setEnabled(true);

        BassBoost.Settings bassBoostSettingTemp =           bassBoost.getProperties();
        BassBoost.Settings bassBoostSetting = new BassBoost.Settings(bassBoostSettingTemp.toString());
        bassBoostSetting.strength = (1000/19);
        bassBoost.setProperties(bassBoostSetting);

        Virtualizer.Settings virtualSettingTemp = virtualizer.getProperties();
        Virtualizer.Settings virtualSetting = new Virtualizer.Settings(virtualSettingTemp.toString());
        virtualSetting.strength = (1000/19);
        virtualizer.setProperties(virtualSetting);
     
  	
        base.setOnSeekBarChangeListener(new CircularSeekBar.OnCircularSeekBarChangeListener() {
            @Override
            public void onProgressChanged(CircularSeekBar circularSeekBar, float progress, boolean fromUser) {

                bassStrength = (short) (((float) 1000 / 19) * (progress));

                try {
                    bassBoost.setStrength((short) bassStrength);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }

            @Override
            public void onStopTrackingTouch(CircularSeekBar seekBar) {}

            @Override
            public void onStartTrackingTouch(CircularSeekBar seekBar) {}
        });

        virtual.setOnSeekBarChangeListener(new CircularSeekBar.OnCircularSeekBarChangeListener() {
            @Override
            public void onProgressChanged(CircularSeekBar circularSeekBar, float progress, boolean fromUser) {

                virtualStrength = (short) (((float) 1000 / 19) * (progress));

                try {
                    virtualizer.setStrength((short) virtualStrength);
                } catch (Exception e) {
                    e.printStackTrace();
                }

            }

            @Override
            public void onStopTrackingTouch(CircularSeekBar seekBar) {

            }

            @Override
            public void onStartTrackingTouch(CircularSeekBar seekBar) {

            }
        });

이런 식으로 코드를 만들었는데 효과가 없는 것 같아요 고쳐야 할 점 알려주시면 감사하겠습니다!!