Which scientist invented MP3 technology to become the mainstream audio format?

1986, Karl Heinz Brandenburg, a German, took the lead in proposing "the idea of digital music compression technology"-"Audio files can be greatly compressed by a coding recombination technology, and then restored by a special decoding technology when playing, so as to achieve the purpose of reducing the volume and maintaining the sound quality." A year later, Brandenburg successfully compressed a CD music of March of Cavalry to the original 1/5. Of course, this requires that the computer speed should not be too slow. It's too slow to decode normally. He said that such technology would be useless if it was not improved. Where there is a will, there is a way. Brandenburg cooperated with an audio research institute in Hamburg and finally developed MP3 at the end of 1990. The test results show that the compression and decoding of audio files are very smooth, and CD-quality music files can be compressed to the original size of112, thus realizing the real-time compression of digital music. At this time, Brandenburg, who has a keen mind, has been keenly aware of the huge market of MP3, so he applied for a patent from the German government before Christmas. 1993, MP3 technology was recognized by the International Organization for Standards (ISO), thus becoming the mainstream audio format.