Abstract: The traditional method for flanging processing focuses only on the time domain. This paper studies how to utilize the features of audio signals in the frequency domain, and proposes a subband decomposition based time-frequency processing scheme for the generation of flanging effect. Theoretical analysis and experimental results show that the new time-frequency flanging processing scheme well adapts to the human hearing sense. The flanging modulation parameters can be adjusted flexibly and independently for different frequency ranges, which realizes a flexible and efficient flanging effect processing.

Key words: digital audio processing, audio effect, flanging, subband decomposition

摘要： 针对传统的调制镶边处理仅从全时域上对原始声音信号进行延时叠加的问题，利用子带分解的思想，研究如何有效地利用音频信号的频域特点，提出了一种新的基于子带分解的时、频镶边处理方案。理论分析和实验结果表明，新的镶边处理方案不仅能够有效利用人耳的听觉特性，还能够独立、灵活地选择和调节不同音域信号的调制镶边参数，实现了一种灵活、高效的镶边特殊音效处理。

关键词: 数字音频处理, 特殊音效, 镶边, 子带分解