The memory capacity is the built-in memory capacity of the player. The larger the capacity, the larger the number of song files that can be stored.
The frequency response range is the range between the lowest effective sound frequency and the highest effective sound frequency, in Hertz (Hz). The smaller the value, the flatter the frequency response curve of the speaker , the smaller the distortion, and the higher the performance.
Refers to the power output by the non-pure voltage output method that mainly uses voltage output in the output port of the Walkman Headphone . Simple analysis: The higher the impedance of the earphone, the larger the output voltage will be, and the total power of the player will be reduced. At this time, the output power will be reduced. When the volume is turned up to a great extent, the power reduction is more significant, and the so-called distortion phenomenon will occur at this time.
Signal to noise ratio
The signal-to-noise ratio is usually expressed in S / N, usually in decibels (dB). The higher the signal-to-noise ratio is, the better the audio products are. The common signal-to-noise ratio of MP3 players is above 60dB.
The composition of the overtone levels of each frequency in the sound is modified to optimize it for a certain type of music and enhance people's feelings. Common include: Normal, Rock, Pop, Dance, Classical, Soft, Jazz, Metal, Bass, and Custom.
It is generally located in the beginning or end of a mp3 file within a few bytes, and is added with information about the mp3 artist, title, album name, age, style, etc. This information is called ID3 information.
TXT text reading
MP3 can read text in TXT format, and can read text while listening to music.