Guys how do I find out that the tracks that I purchased last night on beatport which are all WAV files which beatport is saying is lossless an beatport customer service guys are saying you can search for a audio spectrum analyser on the Internet to test it ! is it ? How can I verify find out that what I have downloaded and got is lossless music ?
One quick indicator is the size. Typically, a lossless 4:30 song should be somewhere around 35-55MB. For wave, add 40% more storage on top of that.
The audio spectrum analyzer is a thing because lossless audio, unlike lossy audio, will retain all available information of a song, although there are more than just one lossless format and some are better. Because lossless retains all information, high frequency region and part of low frequency region will be preserved. In lossy format however, these parts will either be reduced or removed completely to save up space.
If you check the song you bought in a spectrum analyser and does not see any cutoff, then this song is likely to be a lossless song. Bear in mind though, this could be faked to an extent to trick such analyser.