RIFF header, WAVE ID, Format chunk, chunk length GTE 18, wformat Tag not equal to decimal 65534 = 0xFFFE and Data chunk. Since DROID cannot currently handle inverted (i.e. not equal to) sequences, the wformat chunk is not expressed in this signature. For fmt/143 the wformat tag = 65534 = 0xFFFE, so this is handled by setting an appropriate identification priority.