浅谈数字音频处理中的关键问题

Key Issues in Digital Audio Processing

从数字音频处理的流程出发,讨论了音频采样频率的选择以及采样和量化过程中所带来的误差。分析了采样延时和频率分辨率的相互关系,以及时域和频域间相互转换过程中出现的问题。同时针对音频增益控制,均衡器控制,高通、低通和带通的控制以及延时的处理采用数字技术进行处理的可行性进行了分析。

By the flow chart about digital audio processing, frequency of sampling and quantizing, error analysis of that process are discussed. Then the relationship between sampling delay and frequency resolution, and the problem about each conversion between time domain and frequency domain are analyzed. It is feasible that used digital processing controls the gain, the EQ, the delay, the HP, LP and BP.