original_query: What are some conclusions made by listening tests regarding low bitrates (less than 64 kbit/s) in lossy audio codecs?
query: What are some conclusions made by listening tests regarding low bitrates (less than 64 kbit/s) in Vorbis?
answer: A 2007 test at 48 kbit/s showed that aoTuV Vorbis had better quality than WMA and LC-AAC, the same quality as WMA Professional, and lower quality than HE-AAC.