| 邢堃,杨小平,顾亚平,王德勇,薛英智.基于DSP的啸叫抑制系统的研究与实现[J].声学技术,2015,34(4):338~341 |
| 基于DSP的啸叫抑制系统的研究与实现 |
| Design and implementation of howling suppression system based on ARC600 DSP |
| 投稿时间：2014-08-11 修订日期：2014-11-21 |
| DOI：10.16300/j.cnki.1000-3630.2015.04.009 |
| 中文关键词: 啸叫抑制 IIR陷波器 ARC600 DSP |
| 英文关键词: howling suppression IIR notch filter ARC600 DSP |
| 基金项目: |
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| 中文摘要: |
| 扩声系统中由于声反馈导致啸叫, 造成了声音的严重失真。在基于ARC600 DSP核的基础上建立了较为完整的硬件试验系统, 首先在计算机上研究并仿真了啸叫抑制算法, 之后在此试验系统上对该算法做了实时的实现。实验结果说明, 该系统的扩声增益提高了10 dB以上, 有效地抑制啸叫并且可以保持较好的音质, 实时性良好。 |
| 英文摘要: |
| The howling is generated due to acoustic feedback in amplifying system, which can cause the serious distortion of sound. The paper establishes a relatively complete hardware test system based on ARC600 DSP: studying and simulating on computer for the howling suppression algorithm first, and then implementing the algorithm on this test system in real time. It turns out that the amplification gain of the system can be enhanced by about 10dB, and the howling can be effectively suppressed to keep the sound quality almost no loss. |
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