What is the difference between lossless sound quality and normal sound quality?
When downloading music, we often see these options: lossless sound quality and normal sound quality, lossless sound quality requires members to download, otherwise only normal sound quality can be downloaded. Since it is a fee, the lossless sound quality must be higher than the normal sound quality, so what are the differences between them?
Commonly seen MP3, WMA, OGG are called lossy compression. As the name suggests, lossy compression is to reduce the audio sample rate and bit rate, and the output audio file will be smaller than the original file, which is normal sound quality. we often see.
Common MP3, WMA and other formats occupy about 1 to 5 million space for single-handed songs, while for music in lossless formats such as ape and flac, the space occupied by a single song can generally reach tens of megabytes, or even more than 100M.
Bit rate (Kbps) refers to the transmission rate of digital signals, that is, how many thousands of bits of information are transmitted per second (K means thousands of bits, Kb means how many thousands of bits). For music, theoretically this The higher the value, the better the sound quality. Ordinary music, such as WMA, is generally 128kbps music, MP3 is mostly 128, 192, or 320kbps/, while the bit rate of lossless music generally reaches 800-900kbps, and traditional CD even reaches 1411 Kbps. Using lossless compression, the sound quality is the most perfect.
The feature of lossless music is that no matter there is sound between the beats, its data always flows smoothly, so the fast magnetic vibration in your earphones is stable and the sound is natural and real; while lossy formats like MP3 are due to loss of people. The ear cannot hear part of the data, so the magnetic block in the earphone vibrates unnaturally, causing it to vibrate when there is sound and not vibrate when there is no sound. In this way, the magnetic block vibrates excessively and unevenly, which will produce a burr noise. If professional equipment is used, it can be easy to hear right and wrong.
