What is the sound technology?

Li Yin is the transliteration of the English compound word NICAM, namely Near Instantaneous Companded Audio Multiplex, which means "close to instant shrinking audio multi-channel broadcasting". Liyin technology is a call quality optimization solution invented by Motorola. Through the technology, mobile phone users can get clearer call quality. “Feyin” technology can be seen as a make-up artist for call quality, which minimizes the noise impact of a call …… this technology guarantees more than just the volume of the handset in a noisy environment Large, at the same time, you can also properly reduce the volume in a relatively quiet environment, so as to avoid the contents of the call being leaked.