What do lossy and lossless mean and which is better? Part 2
How are audio files encrypted?
In the first part of this article we saw why it was necessary to compress the audio files, since the original formats like WAV or AIFF were unmanageable if you think about sending them by mp3 and storing many on the hard drives that existed at the beginning.
In fact, even today, despite the fact that internet transmission and storage capacity have improved, wab bi el aiff is not used for this purpose, for the same reason: they take up too much space both in transmission and in storage. .
So he had to find ways to compress these files without this meaning a very notorious loss of quality.
The mp3 emerged and revolutionized the world and is still the most important format.
On the one hand, it obviously used some compression, but since it was not efficient enough, it must have begun to understand how human hearing works, in order to eliminate frequencies and sounds that are inaudible to humans and that, however, were stored, occupying space in WAV and AIFF formats.
Over time, better compression methods were developed and then formats emerged that could greatly reduce the size of the file, without losing or discarding any information. This is what is known as lossless, that is, without loss of information.
It is said that the FLAC will end up taking over the market, because it compresses the file and does not need to discard information, achieving that when decompressing the FLAC file we have an original WAV file without having deleted anything.
Mp4Gain can convert mp3 to flac and also normalize its volume or it can just normalize an mp3 or flac, without converting it. You can even extract from a video, just the audio, and record it as any popular audio format like mp3, m4a, flac, ogg, etc.
