Study on the Tones Biases of Mandarin Speaker in Amdo Tibetan Areas Based on Statistics

Tone learning is a major difficulty when students in Amdo Tibetan area learn mandarin. This paper uses experimental phonetics, comparative analysis, and theory and methods of biases analysis to investigate and analyze the pronunciation of mandarin in the Amdo Tibetan area. The perception experiment and similarity experiment were used to analyze the tone of mandarin in the Amdo Tibetan area. The experimental results show that in the process of learning mandarin, the students in Amdo Tibetan area learn from the highest to the lowest in order of tone4, tonel, tone3 and tone2. The most prone to sound in the process of speaking mandarin is tone4, and the most common pronunciation in their biased pronunciation is tone4. The similarity detection has a higher diagnostic accuracy rate, and tone1 has the best effect. The tone2 and tone3 are easy to judge the correct pronunciation as the biased pronunciation, and tone4 is easy to judge the biases pronunciation as the correct pronunciation.