A relatively broad word, it can indicate how heavy an object is, or how good the result of something is. Basic introduction Chinese name: quality Pinyin: zhì?liàng English translation: [Mass; Quality] The term quality is used broadly. People often use quality to describe the auditory effect of music. In WINDOWS it is called "bit speed" and in some players it is described as "bit rate". Quality refers to the sampling rate that converts digital sound from analog format to digital format. The higher the sampling rate, the better the restored sound quality. ●Quality value compared with real audio: 16Kbps=telephone sound quality 24Kbps=increased telephone sound quality, shortwave broadcast, longwave broadcast, European standard medium wave broadcast 40Kbps=American standard medium wave broadcast 56Kbps=voice 64Kbps=increased voice (mobile phone*** best Bit rate setting value, best setting value for mobile phone mono MP3 player) 112Kbps = FM stereo broadcast 128Kbps = tape (best setting value for mobile phone stereo MP3 player, best setting value for low-end MP3 player) 160Kbps=HIFI high fidelity (the best setting value for mid-to-high-end MP3 players) 192Kbps=CD (the best setting value for high-end MP3 players) 256Kbps=Studio music studio (for music enthusiasts) In fact, with the advancement of technology, The quality of music is also getting higher and higher, with the highest quality of MP3 being 320Kbps, but some formats can achieve higher quality and higher sound quality. For example, the APE audio format that is gradually emerging can provide true audiophile-level lossless sound quality and a smaller size than the WAV format. Its quality is usually 550kbps-950kbps. ●Common encoding modes: VBR (Variable Bitrate) dynamic bit rate, that is, there is no fixed bit rate. The compression software instantly determines what bit rate to use based on the audio data during compression. This is a method that takes quality first and takes into account file size. Recommended encoding Mode; ABR (Average Bitrate) average bitrate is an interpolation parameter of VBR. LAME created this encoding mode in response to the poor file volume ratio of CBR and the variable size of files generated by VBR. Within the specified file size, ABR takes every 50 frames (30 frames approximately 1 second) as a segment. Low-frequency and insensitive frequencies use relatively low traffic, and high-frequency and large-dynamic performance uses high traffic. It can be used as VBR and CBR. a compromise choice. CBR (Constant Bitrate) means that the file has a bit rate from beginning to end. Compared with VBR and ABR, the file size it compresses is very large, and the sound quality will not be significantly improved compared to VBR and ABR.