Faad2 is the fastest ISO AAC audio decoder available.
Faad2 correctly decodes all MPEG-4 and MPEG-2 MAIN, LC (Low Complexity),
HE (High Efficiency), LTP (Long Term Prediction), LD (Low Delay), and
ER (Error Resiliency) object type AAC files.
Faad2 includes code for SBR (HE AAC) decoding.