多噪声环境的麦克风小阵语音增强

Small Microphone Array Speech Enhancement in Multiple Noise Environments

针对在非平稳和多种噪声并存的语音增强算法抑制噪声能力有限的问题,提出基于最小跟踪噪声功率谱估计的相干滤波与广义旁瓣抵消的麦克风小阵语音增强算法。该方法先利用最小跟踪噪声功率谱估计的相干滤波抑制弱相关噪声,再结合广义旁瓣抵消与端点检测抑制强相关噪声。实验结果表明,方法更加有效地抑制噪声的影响;并提高了语音的可懂度。

Aiming at limited the suppressing the noise under the circumstance of non-stationary and noise,the speech enhancement algorithm based on coherent filtering of the minimum tracking noise power spectrum estimation and generalized sidelobe canceller is proposed.The method uses the coherent filtering of the minimum tracking noise power spectrum to suppress the weak correlation noise,and then combines the generalized sidelobe canceller and the voice activity detection to suppress the strong correlation noise.The experimental results show that this method can effectively suppress the influence of noise and improve the intelligibility of speech.