Session_blocks_N.plx are based on online snippets
Session_realigned_blocks_N.plx are based on realigned online snippets
Session_from_BB_blocks_N.plx are based on waveclus clustering
Importantly, when you save a plx file, it never overwrites an existing file, but rather appends “-01” to the file name. If that filename already exists as well, it will append “-02” instead, and so on. That means, all files with “-NN” affixes are manually saved. Because of that, for all steps after sorting, we use plx files with the “-01” affix.