Parameter IDs for the AudioEffectType.BAND_PASS_FILTER effect.
Width of the pass band in octaves. Higher values allow a wider range of frequencies through. Range: 0.1 to 4.0. Default: 1.0. Unit: octaves.
Center frequency of the pass band. Range: 20.0 to 20000.0. Default: 1000.0. Unit: Hz.