The development of traditional music is facing the change of digitalization and multimedia, and the application of research and acoustic theory in enhancing the effect of choral music with the help of computer technology is an important trend in the development of musicology at present. The article first proposes a method for choral training and then combines the LCQA algorithm and the FBE algorithm based on Mel filtering energy to propose a method for evaluating the quality of choral sound. The article finally takes a chorus as an empirical research object. It conducts specific experimental tests using the method proposed in this article, and the experimental results obtained are, in the analysis of choral sound effect, the total hoarseness and roughness of choral sound have decreased by about 0.8±0.31. In the evaluation of choral sound quality, the average score of the overall sound quality has risen by 23.25 points.