Design And Implementation Of Piano Sound Library Generation System

With the development of modern technology,the demand for the piano sound library of intelligent piano and digital piano is getting higher and higher.The methods to acquire sound source have many problems,such as complex procedures,high economic cost,bad generalization,intellectual property issues,and synthetic tone is not realistic.This paper presents a piano sound library generation system,which can generate a realistic and high-quality piano sound library and edit timbre flexibly.It enriches the expressive force of intelligent piano and digital piano.The main research work in this paper is as follows:(1)This paper analyzes piano timbre composition and the influencing factors of piano timbre.Based on the existing spectrum analysis method and pitch recognition algorithm,combined with the frequency distribution characteristics of different areas,a harmonic analysis algorithm based on improved confidence level is proposed.(2)Based on multiplicative harmonic model of tone signal and the changeability of timbre characteristics,a timbre-editable audio synthesis model is proposed.Experimental results show that the timbre can be modified by timbre parameters in the model and the characteristics of synthetic timbre conform to the tone of the piano.(3)The piano sound library generation system is designed based on the piano timbre analysis and the piano timbre synthesis model.This paper introduces the main modules of the software,such as audio file reading and writing module,audio information analysis module,timbre parameter acquisition module,audio synthesis module,simulation playing module and so on.The system can flexibly generate piano sound libraries with different quality and meet the requirements of the timbre realness.