About lossless sound quality
In life, many people have questions such as, what is lossless music?
What does 320kbps and 128kbps mean in an mp3 file? If you have a little more fever, what are HiFi, Hi-Res and DSD? How do these music formats work?
The prerequisite for the music to be played on the mobile phone and the computer is that the music (sound) can be stored on the mobile phone and the computer. This may sound like nonsense, but it begs the question: how is sound stored in a computer for something that we can only hear but cannot understand?
Some basic technical knowledge about “digital music”
Computers store information through “binary numbers”, that is, any information in the computer exists in the form of “a sequence of 0 and 1” (such as 100101000110101), and the difference in “sequences of 0 and 1” leads to the information content is different.
It’s easier to understand with a real-life example: For the English language, information can be represented in the form of twenty-six letters, which are then stored on paper. The content is different. A computer only knows two “letters”, 0 and 1, and uses 0 and 1 to store information. For example, the letter “a” is stored as “01100001” on the computer.
The question then is: How do we translate the sound into a “permutation of 0 and 1”? by
To solve this problem, we must first look at the nature of “sound”. We already learned in physics in high school that the essence of sound is not the “sound” that our ears hear, but the “vibration that propagates” in objects.
We perceive this vibration and translate it into the sound we hear through the brain. Most of the physics professors at that time showed us transverse waves that transmit vibrations like water waves
