I read an article that flac has a higher compression ratio. At the same time, FLAC only supports fixed-point sampling and does not support floating-point sampling. This is because it wants to ensure that there is no divisor error that affects the sound quality. APE is a lossless compression format for wav files. It is said that the sound quality is the same, because it is lossless, there is no difference. But the compression rate flac is more advanced. However, APE is still the most popular lossless, which may be the reason why monkey audio software is widely used.