Users can directly check the file extension in the file, then exit and return to the home interface, and select the song file whose format they want to change. Right-click the mouse, select Rename, and change the file suffix to .mp3 to complete the file format change.

Users can download Audio Processing Master. There are many audio processing functions here. Users can choose different functions to use. If we want to convert the song format, then click on the audio conversion function. . Click Add File in the interface to add the song files that need to be converted, then click Output Format, and select the mp3 format that needs to be converted here.

Users can also use other player software to make changes directly. For example, in QQ Music, users can click on the three-line menu bar in the upper right corner. Then select the audio transcoding function below and click to add song conversion format. In the audio format conversion interface, users can add the song files that need to be converted, then select the conversion format in the settings here, click on the mp3 format, then confirm the save address in the lower left corner, and click on the lower right corner to start processing.

MP3 format introduction

MP3 takes advantage of the human ear's insensitivity to high-frequency sound signals to convert time-domain waveform signals into frequency-domain signals and divide them into multiple frequency bands. , use different compression ratios for different frequency bands, increase the compression ratio for high frequencies, and use a small compression ratio for low-frequency signals to ensure that the signal is not distorted. This is equivalent to discarding high-frequency sounds that are basically inaudible to the human ear, and only retaining the audible low-frequency parts, thereby compressing the sound with a compression ratio of 1:10.

Since the full name of this compression method is MPEG Audio Player3, people call it MP3 for short. The sound quality of MP3 with the highest parameters is not much different from that of CD, FLAC and APE lossless compression formats. Its advantage is that it takes up less space after compression and is suitable for storage and use on mobile devices. When they first came out, MP3 players were at the forefront of the digital revolution. However, as consumers turned to other digital products such as smartphones, sales of iPods and other MP3 players fell sharply in the UK market in 2012.