【摘要】 提出了一种应用DSP实现语音增强的自适应数字降噪系统,采用改进的谱减法,通过两个可调参数的选择,较好地做到了降噪与提高语音可懂度之间的折衷,并指出为得到较好的降噪效果在实时实现时要注意的问题。实验表明此方法可有效地降低背景噪声,提高信噪比。更多还原

【Abstract】 This paper introduce an adaptive digital noise suppression system based on Digital Signal Processor to realize Speech Enhancement, applies an improved spectral subtraction algorithm, by selecting two adjustable parameters m and n, to realize the noise suppression and speech understanding improvement, and points out that attention should be paid to some issues for real time realization. It shows that method can efficiently decrease background noise and increase the SNR.更多还原