| 用DSP实现音乐信号的数字处理 |
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| 引用本文： | 陈健 孙丹民. 用DSP实现音乐信号的数字处理[J]. 上海交通大学学报, 1991, 25(6): 29-36 |
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| 作者姓名： | 陈健 孙丹民 |
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| 作者单位： | 上海交通大学电子工程系 89届硕士研究生(陈健)，上海交通大学电子工程系 现在苏州丝绸工学院工作。(孙丹民) |
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| 摘 要： | 从叙述音乐信号的准瞬时压缩编码方法(NIC)开始,对其进行理论分析,推导了量化信噪比的数学公式,并由计算机算出量化信噪比的曲线,从理论上证明NIC比13折线A律压缩方式在信噪比方面高12dB。文中提出采用TMS32010数字信号处理器(DSP)实现NIC处理硬件组成和软件设计,通过实验证明,该方案和设计是可行的。
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| 关 键 词： | DSP 数字信号处理 声频 音乐信号 |
Digital Music Signals Processing Using Digital Signal Processor |
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| Chen Jian,Sun Danming. Digital Music Signals Processing Using Digital Signal Processor[J]. Journal of Shanghai Jiaotong University, 1991, 25(6): 29-36 |
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| Authors: | Chen Jian Sun Danming |
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| Affiliation: | Chen Jian;Sun Danming |
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| Abstract: | This paper begins with a general review of the near-instantaneouslycompanding coding (NIC), and then carries out theory analysis and derivesthe mathematical formula of signal-to-quantilizing noise ratio (SQNR). It isproved that the SQNR of the 5-range NIC is better than the A-law compand-ing method. The authors propose the use of the digital signal processor (DSP)TMS32010 to realize the NIC. This artical describes the hardware constitutionand software design for the whole system. The feasibility of this scheme anddesign has been proved with experiments. |
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| Keywords: | digital audio coding digital signal psocessing audio broadcasting |
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