| Sound playing in the cello plays an important role , in this paper focusing on touch-string point, bow pressure, bow speed method of these three aspects of performance in-depth research and analysis, to the details of these three pairs of sound effects. In this paper, the basic theory of traditional research, the support of mechanics and the use of acoustic, audio Principles of the sound spectrum analysis and other methods to elaborate the mutual relationship between them and their impact on the sound. A professional scholars have a certain amount of attention to force the issue, but did not have in-depth research and demonstration. In this paper, these three separate and comprehensive analysis of (touch-string bow pressure points and the relationship between the touch point and bow string velocity relationship, bow pressure and bow speed relationship), As well as an objective analysis of frequency spectrum obtained they will produce sound effects, and discusses string touch points, bow pressure, bow speed and change the basic tone sound effects. |