Hi,
Files are selected depending on the following:
1. Mode selected (2.1 or 2.2) - selects the files from respective folders
/lib/firmware/allo/piano/2.1 => Mono sub-woofer bin files
/lib/firmware/allo/piano/2.2 => Stereo sub-woofer and audio-speaker bin files.
2. Sample rate: 44100, 48000, 88200, 96000, 176400 or 192000
3. cut-off (cross-over) frequency : 60, 70, …. 190 or 200
4. sub-woofer: 1 for subwoofer & 0 for audio-speakers.
File is named according to these values: allo-piano-dsp-<sampling rate>-<cut-off-frequency>-<sub-woofer>.bin
With Regards
Sparky Admin