一、引言随着工业的发展和人类社会的进步,人们对噪声的影响愈益重视,纷纷投入力量进行研究与探讨,以期尽可能降低噪声对环境的污染,改善人们的生活与工作条件。而美妙和谐的音乐,既是愉快的艺术欣赏与享受,又能产生良好的心理、生理反应,对某些疾病还能产生独特的治疗效果。因此,定量地分析噪声与语音(特别是乐声、歌声等)信号,了解其频谐分布(振幅谱、相位谱与功率谱),并进行相关分析,进而为降低工业噪声、提高乐器生产质量等提供科学依据,这必将产生明显的经济效益与社会效益。 I. INTRODUCTION With the development of industry and the progress of human society, people pay more and more attention to the influence of noise. They have all put efforts into research and discussion in order to reduce noise pollution to the environment and improve people’s living and working conditions as much as possible. The wonderful and harmonious music is not only a pleasant art to enjoy and enjoy, but also produce good psychological and physiological reactions, but also for some diseases can have a unique therapeutic effect. Therefore, the quantitative analysis of noise and speech (especially music, song, etc.) signals to understand the frequency-harmonic distribution (amplitude spectrum, phase spectrum and power spectrum), and correlation analysis, thereby reducing industrial noise and improve instrument production quality Provide scientific basis, which will have obvious economic and social benefits.