产品实列 、dsp算法，啸叫抑制、串口通信-Products real column, dsp algorithms, howling suppression, serial communication

移频法实现啸叫抑制，通过对回声信号做移频，使得回声信号加上输入信号不会再某一频点能量过大产生啸叫-Frequency shift method to achieve howling suppression, echo signals by frequency shift do so echo signal plus input signal will no longer produce a certain frequency can be excessive howling

啸叫抑制文档，防啸叫文档，陷波器，自适应抑制。(feedback cancellation)

探讨了一种数字移频法啸叫检测与抑制音频功率放大实验测试系统设计方案，用来实现带啸叫检测与抑制音频功率放大．系统以 FPGA 为控制核心(This paper has designed a testing system for an audio power amplifier with howling detection and suppression which is used to achieve howling detection and suppression audio power am