It won't have any effect on children's hearing. Our good audio bit rate is only about 320KBP, but the audio bit rate needed by children's ears is at least 600KBP. These sound sources of Er Shen genius Guo Xue early education machine are all collected by CTPC, and recorded in multiple tracks, with the bit rate above 900+kbps. Sound quality details meet the demanding requirements of audio enthusiasts. Each process is tested by researchers themselves, and the whole process is supervised, so that the sound quality is perfect.